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6cbd5570 CM |
1 | /* |
2 | * Copyright (C) 2007 Oracle. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public | |
6 | * License v2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
11 | * General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public | |
14 | * License along with this program; if not, write to the | |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
16 | * Boston, MA 021110-1307, USA. | |
17 | */ | |
18 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_CTREE__ |
20 | #define __BTRFS_CTREE__ | |
eb60ceac | 21 | |
810191ff CM |
22 | #include <linux/mm.h> |
23 | #include <linux/highmem.h> | |
e20d96d6 | 24 | #include <linux/fs.h> |
a2de733c | 25 | #include <linux/rwsem.h> |
803b2f54 | 26 | #include <linux/semaphore.h> |
58176a96 | 27 | #include <linux/completion.h> |
04160088 | 28 | #include <linux/backing-dev.h> |
e6dcd2dc | 29 | #include <linux/wait.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
f8b18087 | 31 | #include <linux/kobject.h> |
1abe9b8a | 32 | #include <trace/events/btrfs.h> |
479965d6 | 33 | #include <asm/kmap_types.h> |
3b16a4e3 | 34 | #include <linux/pagemap.h> |
55e301fd | 35 | #include <linux/btrfs.h> |
d1310b2e | 36 | #include "extent_io.h" |
5f39d397 | 37 | #include "extent_map.h" |
8b712842 | 38 | #include "async-thread.h" |
e20d96d6 | 39 | |
e089f05c | 40 | struct btrfs_trans_handle; |
79154b1b | 41 | struct btrfs_transaction; |
a22285a6 | 42 | struct btrfs_pending_snapshot; |
35b7e476 CM |
43 | extern struct kmem_cache *btrfs_trans_handle_cachep; |
44 | extern struct kmem_cache *btrfs_transaction_cachep; | |
45 | extern struct kmem_cache *btrfs_bit_radix_cachep; | |
2c90e5d6 | 46 | extern struct kmem_cache *btrfs_path_cachep; |
dc89e982 | 47 | extern struct kmem_cache *btrfs_free_space_cachep; |
e6dcd2dc | 48 | struct btrfs_ordered_sum; |
e089f05c | 49 | |
294e30fe JB |
50 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
51 | #define STATIC noinline | |
52 | #else | |
53 | #define STATIC static noinline | |
54 | #endif | |
55 | ||
cdb4c574 | 56 | #define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ |
eb60ceac | 57 | |
72d7aefc | 58 | #define BTRFS_MAX_MIRRORS 3 |
94598ba8 | 59 | |
4008c04a | 60 | #define BTRFS_MAX_LEVEL 8 |
0b86a832 | 61 | |
5d4f98a2 YZ |
62 | #define BTRFS_COMPAT_EXTENT_TREE_V0 |
63 | ||
5a3f23d5 CM |
64 | /* |
65 | * files bigger than this get some pre-flushing when they are added | |
66 | * to the ordered operations list. That way we limit the total | |
67 | * work done by the commit | |
68 | */ | |
69 | #define BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT (8 * 1024 * 1024) | |
70 | ||
0b86a832 | 71 | /* holds pointers to all of the tree roots */ |
6407bf6d | 72 | #define BTRFS_ROOT_TREE_OBJECTID 1ULL |
0b86a832 CM |
73 | |
74 | /* stores information about which extents are in use, and reference counts */ | |
0cf6c620 | 75 | #define BTRFS_EXTENT_TREE_OBJECTID 2ULL |
0b86a832 | 76 | |
0b86a832 CM |
77 | /* |
78 | * chunk tree stores translations from logical -> physical block numbering | |
79 | * the super block points to the chunk tree | |
80 | */ | |
e085def2 | 81 | #define BTRFS_CHUNK_TREE_OBJECTID 3ULL |
0b86a832 CM |
82 | |
83 | /* | |
84 | * stores information about which areas of a given device are in use. | |
85 | * one per device. The tree of tree roots points to the device tree | |
86 | */ | |
e085def2 CM |
87 | #define BTRFS_DEV_TREE_OBJECTID 4ULL |
88 | ||
89 | /* one per subvolume, storing files and directories */ | |
90 | #define BTRFS_FS_TREE_OBJECTID 5ULL | |
91 | ||
92 | /* directory objectid inside the root tree */ | |
93 | #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL | |
0b86a832 | 94 | |
d20f7043 CM |
95 | /* holds checksums of all the data extents */ |
96 | #define BTRFS_CSUM_TREE_OBJECTID 7ULL | |
97 | ||
630dc772 AJ |
98 | /* holds quota configuration and tracking */ |
99 | #define BTRFS_QUOTA_TREE_OBJECTID 8ULL | |
100 | ||
07b30a49 SB |
101 | /* for storing items that use the BTRFS_UUID_KEY* types */ |
102 | #define BTRFS_UUID_TREE_OBJECTID 9ULL | |
103 | ||
60b62978 DS |
104 | /* for storing balance parameters in the root tree */ |
105 | #define BTRFS_BALANCE_OBJECTID -4ULL | |
106 | ||
7b128766 JB |
107 | /* orhpan objectid for tracking unlinked/truncated files */ |
108 | #define BTRFS_ORPHAN_OBJECTID -5ULL | |
109 | ||
e02119d5 CM |
110 | /* does write ahead logging to speed up fsyncs */ |
111 | #define BTRFS_TREE_LOG_OBJECTID -6ULL | |
112 | #define BTRFS_TREE_LOG_FIXUP_OBJECTID -7ULL | |
113 | ||
e4657689 ZY |
114 | /* for space balancing */ |
115 | #define BTRFS_TREE_RELOC_OBJECTID -8ULL | |
116 | #define BTRFS_DATA_RELOC_TREE_OBJECTID -9ULL | |
117 | ||
d20f7043 CM |
118 | /* |
119 | * extent checksums all have this objectid | |
120 | * this allows them to share the logging tree | |
121 | * for fsyncs | |
122 | */ | |
123 | #define BTRFS_EXTENT_CSUM_OBJECTID -10ULL | |
124 | ||
0af3d00b JB |
125 | /* For storing free space cache */ |
126 | #define BTRFS_FREE_SPACE_OBJECTID -11ULL | |
127 | ||
82d5902d | 128 | /* |
527a1361 | 129 | * The inode number assigned to the special inode for storing |
82d5902d LZ |
130 | * free ino cache |
131 | */ | |
132 | #define BTRFS_FREE_INO_OBJECTID -12ULL | |
133 | ||
31840ae1 ZY |
134 | /* dummy objectid represents multiple objectids */ |
135 | #define BTRFS_MULTIPLE_OBJECTIDS -255ULL | |
136 | ||
0b86a832 | 137 | /* |
6527cdbe | 138 | * All files have objectids in this range. |
0b86a832 | 139 | */ |
f6dbff55 | 140 | #define BTRFS_FIRST_FREE_OBJECTID 256ULL |
6527cdbe | 141 | #define BTRFS_LAST_FREE_OBJECTID -256ULL |
e17cade2 | 142 | #define BTRFS_FIRST_CHUNK_TREE_OBJECTID 256ULL |
3768f368 | 143 | |
0b86a832 CM |
144 | |
145 | /* | |
146 | * the device items go into the chunk tree. The key is in the form | |
147 | * [ 1 BTRFS_DEV_ITEM_KEY device_id ] | |
148 | */ | |
149 | #define BTRFS_DEV_ITEMS_OBJECTID 1ULL | |
150 | ||
4df27c4d YZ |
151 | #define BTRFS_BTREE_INODE_OBJECTID 1 |
152 | ||
153 | #define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2 | |
154 | ||
6e71c47a | 155 | #define BTRFS_DEV_REPLACE_DEVID 0ULL |
e93c89c1 | 156 | |
727011e0 CM |
157 | /* |
158 | * the max metadata block size. This limit is somewhat artificial, | |
159 | * but the memmove costs go through the roof for larger blocks. | |
160 | */ | |
161 | #define BTRFS_MAX_METADATA_BLOCKSIZE 65536 | |
162 | ||
e20d96d6 CM |
163 | /* |
164 | * we can actually store much bigger names, but lets not confuse the rest | |
165 | * of linux | |
166 | */ | |
167 | #define BTRFS_NAME_LEN 255 | |
168 | ||
f186373f MF |
169 | /* |
170 | * Theoretical limit is larger, but we keep this down to a sane | |
171 | * value. That should limit greatly the possibility of collisions on | |
172 | * inode ref items. | |
173 | */ | |
174 | #define BTRFS_LINK_MAX 65535U | |
175 | ||
f254e52c CM |
176 | /* 32 bytes in various csum fields */ |
177 | #define BTRFS_CSUM_SIZE 32 | |
607d432d JB |
178 | |
179 | /* csum types */ | |
180 | #define BTRFS_CSUM_TYPE_CRC32 0 | |
181 | ||
182 | static int btrfs_csum_sizes[] = { 4, 0 }; | |
183 | ||
509659cd | 184 | /* four bytes for CRC32 */ |
3954401f | 185 | #define BTRFS_EMPTY_DIR_SIZE 0 |
f254e52c | 186 | |
29a8d9a0 SB |
187 | /* spefic to btrfs_map_block(), therefore not in include/linux/blk_types.h */ |
188 | #define REQ_GET_READ_MIRRORS (1 << 30) | |
189 | ||
fabb5681 CM |
190 | #define BTRFS_FT_UNKNOWN 0 |
191 | #define BTRFS_FT_REG_FILE 1 | |
192 | #define BTRFS_FT_DIR 2 | |
193 | #define BTRFS_FT_CHRDEV 3 | |
194 | #define BTRFS_FT_BLKDEV 4 | |
195 | #define BTRFS_FT_FIFO 5 | |
196 | #define BTRFS_FT_SOCK 6 | |
197 | #define BTRFS_FT_SYMLINK 7 | |
5103e947 JB |
198 | #define BTRFS_FT_XATTR 8 |
199 | #define BTRFS_FT_MAX 9 | |
fabb5681 | 200 | |
3d136a11 SB |
201 | /* ioprio of readahead is set to idle */ |
202 | #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) | |
203 | ||
e2d84521 MX |
204 | #define BTRFS_DIRTY_METADATA_THRESH (32 * 1024 * 1024) |
205 | ||
fec577fb | 206 | /* |
d4a78947 WF |
207 | * The key defines the order in the tree, and so it also defines (optimal) |
208 | * block layout. | |
209 | * | |
210 | * objectid corresponds to the inode number. | |
211 | * | |
212 | * type tells us things about the object, and is a kind of stream selector. | |
213 | * so for a given inode, keys with type of 1 might refer to the inode data, | |
214 | * type of 2 may point to file data in the btree and type == 3 may point to | |
215 | * extents. | |
fec577fb CM |
216 | * |
217 | * offset is the starting byte offset for this key in the stream. | |
e2fa7227 CM |
218 | * |
219 | * btrfs_disk_key is in disk byte order. struct btrfs_key is always | |
220 | * in cpu native order. Otherwise they are identical and their sizes | |
221 | * should be the same (ie both packed) | |
fec577fb | 222 | */ |
e2fa7227 CM |
223 | struct btrfs_disk_key { |
224 | __le64 objectid; | |
5f39d397 | 225 | u8 type; |
70b2befd | 226 | __le64 offset; |
e2fa7227 CM |
227 | } __attribute__ ((__packed__)); |
228 | ||
229 | struct btrfs_key { | |
eb60ceac | 230 | u64 objectid; |
5f39d397 | 231 | u8 type; |
70b2befd | 232 | u64 offset; |
eb60ceac CM |
233 | } __attribute__ ((__packed__)); |
234 | ||
0b86a832 CM |
235 | struct btrfs_mapping_tree { |
236 | struct extent_map_tree map_tree; | |
237 | }; | |
238 | ||
0b86a832 CM |
239 | struct btrfs_dev_item { |
240 | /* the internal btrfs device id */ | |
241 | __le64 devid; | |
242 | ||
243 | /* size of the device */ | |
244 | __le64 total_bytes; | |
245 | ||
246 | /* bytes used */ | |
247 | __le64 bytes_used; | |
248 | ||
249 | /* optimal io alignment for this device */ | |
250 | __le32 io_align; | |
251 | ||
252 | /* optimal io width for this device */ | |
253 | __le32 io_width; | |
254 | ||
255 | /* minimal io size for this device */ | |
256 | __le32 sector_size; | |
257 | ||
0b86a832 CM |
258 | /* type and info about this device */ |
259 | __le64 type; | |
260 | ||
2b82032c YZ |
261 | /* expected generation for this device */ |
262 | __le64 generation; | |
263 | ||
c3027eb5 CM |
264 | /* |
265 | * starting byte of this partition on the device, | |
d4a78947 | 266 | * to allow for stripe alignment in the future |
c3027eb5 CM |
267 | */ |
268 | __le64 start_offset; | |
269 | ||
e17cade2 CM |
270 | /* grouping information for allocation decisions */ |
271 | __le32 dev_group; | |
272 | ||
273 | /* seek speed 0-100 where 100 is fastest */ | |
274 | u8 seek_speed; | |
275 | ||
276 | /* bandwidth 0-100 where 100 is fastest */ | |
277 | u8 bandwidth; | |
278 | ||
0d81ba5d | 279 | /* btrfs generated uuid for this device */ |
e17cade2 | 280 | u8 uuid[BTRFS_UUID_SIZE]; |
2b82032c YZ |
281 | |
282 | /* uuid of FS who owns this device */ | |
283 | u8 fsid[BTRFS_UUID_SIZE]; | |
0b86a832 CM |
284 | } __attribute__ ((__packed__)); |
285 | ||
286 | struct btrfs_stripe { | |
287 | __le64 devid; | |
288 | __le64 offset; | |
e17cade2 | 289 | u8 dev_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
290 | } __attribute__ ((__packed__)); |
291 | ||
292 | struct btrfs_chunk { | |
e17cade2 CM |
293 | /* size of this chunk in bytes */ |
294 | __le64 length; | |
295 | ||
296 | /* objectid of the root referencing this chunk */ | |
0b86a832 | 297 | __le64 owner; |
e17cade2 | 298 | |
0b86a832 CM |
299 | __le64 stripe_len; |
300 | __le64 type; | |
301 | ||
302 | /* optimal io alignment for this chunk */ | |
303 | __le32 io_align; | |
304 | ||
305 | /* optimal io width for this chunk */ | |
306 | __le32 io_width; | |
307 | ||
308 | /* minimal io size for this chunk */ | |
309 | __le32 sector_size; | |
310 | ||
311 | /* 2^16 stripes is quite a lot, a second limit is the size of a single | |
312 | * item in the btree | |
313 | */ | |
314 | __le16 num_stripes; | |
321aecc6 CM |
315 | |
316 | /* sub stripes only matter for raid10 */ | |
317 | __le16 sub_stripes; | |
0b86a832 CM |
318 | struct btrfs_stripe stripe; |
319 | /* additional stripes go here */ | |
320 | } __attribute__ ((__packed__)); | |
321 | ||
0af3d00b JB |
322 | #define BTRFS_FREE_SPACE_EXTENT 1 |
323 | #define BTRFS_FREE_SPACE_BITMAP 2 | |
324 | ||
325 | struct btrfs_free_space_entry { | |
326 | __le64 offset; | |
327 | __le64 bytes; | |
328 | u8 type; | |
329 | } __attribute__ ((__packed__)); | |
330 | ||
331 | struct btrfs_free_space_header { | |
332 | struct btrfs_disk_key location; | |
333 | __le64 generation; | |
334 | __le64 num_entries; | |
335 | __le64 num_bitmaps; | |
336 | } __attribute__ ((__packed__)); | |
337 | ||
0b86a832 CM |
338 | static inline unsigned long btrfs_chunk_item_size(int num_stripes) |
339 | { | |
340 | BUG_ON(num_stripes == 0); | |
341 | return sizeof(struct btrfs_chunk) + | |
342 | sizeof(struct btrfs_stripe) * (num_stripes - 1); | |
343 | } | |
344 | ||
5d4f98a2 YZ |
345 | #define BTRFS_HEADER_FLAG_WRITTEN (1ULL << 0) |
346 | #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) | |
acce952b | 347 | |
348 | /* | |
349 | * File system states | |
350 | */ | |
87533c47 | 351 | #define BTRFS_FS_STATE_ERROR 0 |
dc81cdc5 | 352 | #define BTRFS_FS_STATE_REMOUNTING 1 |
08748810 | 353 | #define BTRFS_FS_STATE_TRANS_ABORTED 2 |
c404e0dc | 354 | #define BTRFS_FS_STATE_DEV_REPLACING 3 |
acce952b | 355 | |
87533c47 | 356 | /* Super block flags */ |
acce952b | 357 | /* Errors detected */ |
358 | #define BTRFS_SUPER_FLAG_ERROR (1ULL << 2) | |
359 | ||
5d4f98a2 YZ |
360 | #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) |
361 | #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) | |
362 | ||
363 | #define BTRFS_BACKREF_REV_MAX 256 | |
364 | #define BTRFS_BACKREF_REV_SHIFT 56 | |
365 | #define BTRFS_BACKREF_REV_MASK (((u64)BTRFS_BACKREF_REV_MAX - 1) << \ | |
366 | BTRFS_BACKREF_REV_SHIFT) | |
367 | ||
368 | #define BTRFS_OLD_BACKREF_REV 0 | |
369 | #define BTRFS_MIXED_BACKREF_REV 1 | |
63b10fc4 | 370 | |
fec577fb CM |
371 | /* |
372 | * every tree block (leaf or node) starts with this header. | |
373 | */ | |
bb492bb0 | 374 | struct btrfs_header { |
e17cade2 | 375 | /* these first four must match the super block */ |
f254e52c | 376 | u8 csum[BTRFS_CSUM_SIZE]; |
5f39d397 | 377 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 378 | __le64 bytenr; /* which block this node is supposed to live in */ |
63b10fc4 | 379 | __le64 flags; |
e17cade2 CM |
380 | |
381 | /* allowed to be different from the super from here on down */ | |
382 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; | |
7f5c1516 | 383 | __le64 generation; |
4d775673 | 384 | __le64 owner; |
5f39d397 | 385 | __le32 nritems; |
9a6f11ed | 386 | u8 level; |
eb60ceac CM |
387 | } __attribute__ ((__packed__)); |
388 | ||
5f39d397 | 389 | #define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \ |
d397712b CM |
390 | sizeof(struct btrfs_header)) / \ |
391 | sizeof(struct btrfs_key_ptr)) | |
123abc88 | 392 | #define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header)) |
5f39d397 | 393 | #define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->leafsize)) |
236454df CM |
394 | #define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
395 | sizeof(struct btrfs_item) - \ | |
396 | sizeof(struct btrfs_file_extent_item)) | |
f34f57a3 YZ |
397 | #define BTRFS_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \ |
398 | sizeof(struct btrfs_item) -\ | |
399 | sizeof(struct btrfs_dir_item)) | |
eb60ceac | 400 | |
0b86a832 CM |
401 | |
402 | /* | |
403 | * this is a very generous portion of the super block, giving us | |
404 | * room to translate 14 chunks with 3 stripes each. | |
405 | */ | |
406 | #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 | |
7ae9c09d | 407 | #define BTRFS_LABEL_SIZE 256 |
0b86a832 | 408 | |
af31f5e5 CM |
409 | /* |
410 | * just in case we somehow lose the roots and are not able to mount, | |
411 | * we store an array of the roots from previous transactions | |
412 | * in the super. | |
413 | */ | |
414 | #define BTRFS_NUM_BACKUP_ROOTS 4 | |
415 | struct btrfs_root_backup { | |
416 | __le64 tree_root; | |
417 | __le64 tree_root_gen; | |
418 | ||
419 | __le64 chunk_root; | |
420 | __le64 chunk_root_gen; | |
421 | ||
422 | __le64 extent_root; | |
423 | __le64 extent_root_gen; | |
424 | ||
425 | __le64 fs_root; | |
426 | __le64 fs_root_gen; | |
427 | ||
428 | __le64 dev_root; | |
429 | __le64 dev_root_gen; | |
430 | ||
431 | __le64 csum_root; | |
432 | __le64 csum_root_gen; | |
433 | ||
434 | __le64 total_bytes; | |
435 | __le64 bytes_used; | |
436 | __le64 num_devices; | |
437 | /* future */ | |
d1423248 | 438 | __le64 unused_64[4]; |
af31f5e5 CM |
439 | |
440 | u8 tree_root_level; | |
441 | u8 chunk_root_level; | |
442 | u8 extent_root_level; | |
443 | u8 fs_root_level; | |
444 | u8 dev_root_level; | |
445 | u8 csum_root_level; | |
446 | /* future and to align */ | |
447 | u8 unused_8[10]; | |
448 | } __attribute__ ((__packed__)); | |
449 | ||
fec577fb CM |
450 | /* |
451 | * the super block basically lists the main trees of the FS | |
452 | * it currently lacks any block count etc etc | |
453 | */ | |
234b63a0 | 454 | struct btrfs_super_block { |
f254e52c | 455 | u8 csum[BTRFS_CSUM_SIZE]; |
63b10fc4 | 456 | /* the first 4 fields must match struct btrfs_header */ |
2b82032c | 457 | u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ |
db94535d | 458 | __le64 bytenr; /* this block number */ |
63b10fc4 | 459 | __le64 flags; |
e17cade2 CM |
460 | |
461 | /* allowed to be different from the btrfs_header from here own down */ | |
3768f368 | 462 | __le64 magic; |
3768f368 CM |
463 | __le64 generation; |
464 | __le64 root; | |
0b86a832 | 465 | __le64 chunk_root; |
e02119d5 | 466 | __le64 log_root; |
c3027eb5 CM |
467 | |
468 | /* this will help find the new super based on the log root */ | |
469 | __le64 log_root_transid; | |
db94535d CM |
470 | __le64 total_bytes; |
471 | __le64 bytes_used; | |
2e635a27 | 472 | __le64 root_dir_objectid; |
8a4b83cc | 473 | __le64 num_devices; |
5f39d397 CM |
474 | __le32 sectorsize; |
475 | __le32 nodesize; | |
476 | __le32 leafsize; | |
87ee04eb | 477 | __le32 stripesize; |
0b86a832 | 478 | __le32 sys_chunk_array_size; |
84234f3a | 479 | __le64 chunk_root_generation; |
f2b636e8 JB |
480 | __le64 compat_flags; |
481 | __le64 compat_ro_flags; | |
482 | __le64 incompat_flags; | |
607d432d | 483 | __le16 csum_type; |
db94535d | 484 | u8 root_level; |
0b86a832 | 485 | u8 chunk_root_level; |
e02119d5 | 486 | u8 log_root_level; |
0d81ba5d | 487 | struct btrfs_dev_item dev_item; |
c3027eb5 | 488 | |
7ae9c09d | 489 | char label[BTRFS_LABEL_SIZE]; |
c3027eb5 | 490 | |
0af3d00b | 491 | __le64 cache_generation; |
26432799 | 492 | __le64 uuid_tree_generation; |
0af3d00b | 493 | |
c3027eb5 | 494 | /* future expansion */ |
26432799 | 495 | __le64 reserved[30]; |
0b86a832 | 496 | u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; |
af31f5e5 | 497 | struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; |
cfaa7295 CM |
498 | } __attribute__ ((__packed__)); |
499 | ||
f2b636e8 JB |
500 | /* |
501 | * Compat flags that we support. If any incompat flags are set other than the | |
502 | * ones specified below then we will fail to mount | |
503 | */ | |
5d4f98a2 | 504 | #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) |
0af3d00b | 505 | #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) |
67377734 | 506 | #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) |
a6fa6fae | 507 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) |
727011e0 CM |
508 | /* |
509 | * some patches floated around with a second compression method | |
510 | * lets save that incompat here for when they do get in | |
511 | * Note we don't actually support it, we're just reserving the | |
512 | * number | |
513 | */ | |
514 | #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4) | |
515 | ||
516 | /* | |
517 | * older kernels tried to do bigger metadata blocks, but the | |
518 | * code was pretty buggy. Lets not let them try anymore. | |
519 | */ | |
520 | #define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) | |
5d4f98a2 | 521 | |
f186373f | 522 | #define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) |
53b381b3 | 523 | #define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) |
3173a18f | 524 | #define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) |
16e7549f | 525 | #define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) |
f186373f | 526 | |
5d4f98a2 | 527 | #define BTRFS_FEATURE_COMPAT_SUPP 0ULL |
2eaa055f JM |
528 | #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL |
529 | #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL | |
5d4f98a2 | 530 | #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL |
2eaa055f JM |
531 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL |
532 | #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL | |
533 | ||
0af3d00b JB |
534 | #define BTRFS_FEATURE_INCOMPAT_SUPP \ |
535 | (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ | |
67377734 | 536 | BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ |
a6fa6fae | 537 | BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ |
727011e0 | 538 | BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ |
f186373f | 539 | BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ |
53b381b3 | 540 | BTRFS_FEATURE_INCOMPAT_RAID56 | \ |
3173a18f | 541 | BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ |
16e7549f JB |
542 | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ |
543 | BTRFS_FEATURE_INCOMPAT_NO_HOLES) | |
f2b636e8 | 544 | |
2eaa055f JM |
545 | #define BTRFS_FEATURE_INCOMPAT_SAFE_SET \ |
546 | (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF) | |
547 | #define BTRFS_FEATURE_INCOMPAT_SAFE_CLEAR 0ULL | |
f2b636e8 | 548 | |
fec577fb | 549 | /* |
62e2749e | 550 | * A leaf is full of items. offset and size tell us where to find |
fec577fb CM |
551 | * the item in the leaf (relative to the start of the data area) |
552 | */ | |
0783fcfc | 553 | struct btrfs_item { |
e2fa7227 | 554 | struct btrfs_disk_key key; |
123abc88 | 555 | __le32 offset; |
5f39d397 | 556 | __le32 size; |
eb60ceac CM |
557 | } __attribute__ ((__packed__)); |
558 | ||
fec577fb CM |
559 | /* |
560 | * leaves have an item area and a data area: | |
561 | * [item0, item1....itemN] [free space] [dataN...data1, data0] | |
562 | * | |
563 | * The data is separate from the items to get the keys closer together | |
564 | * during searches. | |
565 | */ | |
234b63a0 | 566 | struct btrfs_leaf { |
bb492bb0 | 567 | struct btrfs_header header; |
123abc88 | 568 | struct btrfs_item items[]; |
eb60ceac CM |
569 | } __attribute__ ((__packed__)); |
570 | ||
fec577fb CM |
571 | /* |
572 | * all non-leaf blocks are nodes, they hold only keys and pointers to | |
573 | * other blocks | |
574 | */ | |
123abc88 CM |
575 | struct btrfs_key_ptr { |
576 | struct btrfs_disk_key key; | |
577 | __le64 blockptr; | |
74493f7a | 578 | __le64 generation; |
123abc88 CM |
579 | } __attribute__ ((__packed__)); |
580 | ||
234b63a0 | 581 | struct btrfs_node { |
bb492bb0 | 582 | struct btrfs_header header; |
123abc88 | 583 | struct btrfs_key_ptr ptrs[]; |
eb60ceac CM |
584 | } __attribute__ ((__packed__)); |
585 | ||
fec577fb | 586 | /* |
234b63a0 CM |
587 | * btrfs_paths remember the path taken from the root down to the leaf. |
588 | * level 0 is always the leaf, and nodes[1...BTRFS_MAX_LEVEL] will point | |
fec577fb CM |
589 | * to any other levels that are present. |
590 | * | |
591 | * The slots array records the index of the item or block pointer | |
592 | * used while walking the tree. | |
593 | */ | |
234b63a0 | 594 | struct btrfs_path { |
5f39d397 | 595 | struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; |
234b63a0 | 596 | int slots[BTRFS_MAX_LEVEL]; |
925baedd CM |
597 | /* if there is real range locking, this locks field will change */ |
598 | int locks[BTRFS_MAX_LEVEL]; | |
3c69faec | 599 | int reada; |
925baedd | 600 | /* keep some upper locks as we walk down */ |
6702ed49 | 601 | int lowest_level; |
459931ec CM |
602 | |
603 | /* | |
604 | * set by btrfs_split_item, tells search_slot to keep all locks | |
605 | * and to force calls to keep space in the nodes | |
606 | */ | |
b9473439 CM |
607 | unsigned int search_for_split:1; |
608 | unsigned int keep_locks:1; | |
609 | unsigned int skip_locking:1; | |
610 | unsigned int leave_spinning:1; | |
5d4f98a2 | 611 | unsigned int search_commit_root:1; |
3f8a18cc | 612 | unsigned int need_commit_sem:1; |
eb60ceac | 613 | }; |
5de08d7d | 614 | |
62e2749e CM |
615 | /* |
616 | * items in the extent btree are used to record the objectid of the | |
617 | * owner of the block and the number of references | |
618 | */ | |
5d4f98a2 | 619 | |
62e2749e | 620 | struct btrfs_extent_item { |
5d4f98a2 YZ |
621 | __le64 refs; |
622 | __le64 generation; | |
623 | __le64 flags; | |
624 | } __attribute__ ((__packed__)); | |
625 | ||
626 | struct btrfs_extent_item_v0 { | |
62e2749e | 627 | __le32 refs; |
74493f7a CM |
628 | } __attribute__ ((__packed__)); |
629 | ||
5d4f98a2 YZ |
630 | #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \ |
631 | sizeof(struct btrfs_item)) | |
632 | ||
633 | #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) | |
634 | #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) | |
635 | ||
636 | /* following flags only apply to tree blocks */ | |
637 | ||
638 | /* use full backrefs for extent pointers in the block */ | |
639 | #define BTRFS_BLOCK_FLAG_FULL_BACKREF (1ULL << 8) | |
640 | ||
a2de733c AJ |
641 | /* |
642 | * this flag is only used internally by scrub and may be changed at any time | |
643 | * it is only declared here to avoid collisions | |
644 | */ | |
645 | #define BTRFS_EXTENT_FLAG_SUPER (1ULL << 48) | |
646 | ||
5d4f98a2 YZ |
647 | struct btrfs_tree_block_info { |
648 | struct btrfs_disk_key key; | |
649 | u8 level; | |
650 | } __attribute__ ((__packed__)); | |
651 | ||
652 | struct btrfs_extent_data_ref { | |
653 | __le64 root; | |
654 | __le64 objectid; | |
655 | __le64 offset; | |
656 | __le32 count; | |
657 | } __attribute__ ((__packed__)); | |
658 | ||
659 | struct btrfs_shared_data_ref { | |
660 | __le32 count; | |
661 | } __attribute__ ((__packed__)); | |
662 | ||
663 | struct btrfs_extent_inline_ref { | |
664 | u8 type; | |
1bec1aed | 665 | __le64 offset; |
5d4f98a2 YZ |
666 | } __attribute__ ((__packed__)); |
667 | ||
668 | /* old style backrefs item */ | |
669 | struct btrfs_extent_ref_v0 { | |
74493f7a CM |
670 | __le64 root; |
671 | __le64 generation; | |
672 | __le64 objectid; | |
5d4f98a2 | 673 | __le32 count; |
62e2749e CM |
674 | } __attribute__ ((__packed__)); |
675 | ||
5d4f98a2 | 676 | |
0b86a832 CM |
677 | /* dev extents record free space on individual devices. The owner |
678 | * field points back to the chunk allocation mapping tree that allocated | |
e17cade2 | 679 | * the extent. The chunk tree uuid field is a way to double check the owner |
0b86a832 CM |
680 | */ |
681 | struct btrfs_dev_extent { | |
e17cade2 CM |
682 | __le64 chunk_tree; |
683 | __le64 chunk_objectid; | |
684 | __le64 chunk_offset; | |
0b86a832 | 685 | __le64 length; |
e17cade2 | 686 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
0b86a832 CM |
687 | } __attribute__ ((__packed__)); |
688 | ||
3954401f | 689 | struct btrfs_inode_ref { |
aec7477b | 690 | __le64 index; |
3954401f CM |
691 | __le16 name_len; |
692 | /* name goes here */ | |
693 | } __attribute__ ((__packed__)); | |
694 | ||
f186373f MF |
695 | struct btrfs_inode_extref { |
696 | __le64 parent_objectid; | |
697 | __le64 index; | |
698 | __le16 name_len; | |
699 | __u8 name[0]; | |
700 | /* name goes here */ | |
701 | } __attribute__ ((__packed__)); | |
702 | ||
0b86a832 | 703 | struct btrfs_timespec { |
f254e52c | 704 | __le64 sec; |
1e1d2701 CM |
705 | __le32 nsec; |
706 | } __attribute__ ((__packed__)); | |
707 | ||
95029d7d | 708 | enum btrfs_compression_type { |
261507a0 LZ |
709 | BTRFS_COMPRESS_NONE = 0, |
710 | BTRFS_COMPRESS_ZLIB = 1, | |
a6fa6fae LZ |
711 | BTRFS_COMPRESS_LZO = 2, |
712 | BTRFS_COMPRESS_TYPES = 2, | |
713 | BTRFS_COMPRESS_LAST = 3, | |
95029d7d | 714 | }; |
c8b97818 | 715 | |
1e1d2701 | 716 | struct btrfs_inode_item { |
e02119d5 | 717 | /* nfs style generation number */ |
1e1d2701 | 718 | __le64 generation; |
e02119d5 CM |
719 | /* transid that last touched this inode */ |
720 | __le64 transid; | |
1e1d2701 | 721 | __le64 size; |
a76a3cd4 | 722 | __le64 nbytes; |
31f3c99b | 723 | __le64 block_group; |
1e1d2701 CM |
724 | __le32 nlink; |
725 | __le32 uid; | |
726 | __le32 gid; | |
727 | __le32 mode; | |
0b86a832 | 728 | __le64 rdev; |
f2b636e8 | 729 | __le64 flags; |
c8b97818 | 730 | |
c3027eb5 CM |
731 | /* modification sequence number for NFS */ |
732 | __le64 sequence; | |
733 | ||
734 | /* | |
735 | * a little future expansion, for more than this we can | |
736 | * just grow the inode item and version it | |
737 | */ | |
738 | __le64 reserved[4]; | |
0b86a832 CM |
739 | struct btrfs_timespec atime; |
740 | struct btrfs_timespec ctime; | |
741 | struct btrfs_timespec mtime; | |
742 | struct btrfs_timespec otime; | |
1e1d2701 CM |
743 | } __attribute__ ((__packed__)); |
744 | ||
e02119d5 CM |
745 | struct btrfs_dir_log_item { |
746 | __le64 end; | |
747 | } __attribute__ ((__packed__)); | |
748 | ||
62e2749e | 749 | struct btrfs_dir_item { |
d6e4a428 | 750 | struct btrfs_disk_key location; |
e02119d5 | 751 | __le64 transid; |
5103e947 | 752 | __le16 data_len; |
a8a2ee0c | 753 | __le16 name_len; |
62e2749e CM |
754 | u8 type; |
755 | } __attribute__ ((__packed__)); | |
756 | ||
b83cc969 LZ |
757 | #define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) |
758 | ||
62e2749e | 759 | struct btrfs_root_item { |
d6e4a428 | 760 | struct btrfs_inode_item inode; |
84234f3a | 761 | __le64 generation; |
d6e4a428 | 762 | __le64 root_dirid; |
db94535d CM |
763 | __le64 bytenr; |
764 | __le64 byte_limit; | |
765 | __le64 bytes_used; | |
80ff3856 | 766 | __le64 last_snapshot; |
f2b636e8 | 767 | __le64 flags; |
62e2749e | 768 | __le32 refs; |
5eda7b5e CM |
769 | struct btrfs_disk_key drop_progress; |
770 | u8 drop_level; | |
db94535d | 771 | u8 level; |
8ea05e3a AB |
772 | |
773 | /* | |
774 | * The following fields appear after subvol_uuids+subvol_times | |
775 | * were introduced. | |
776 | */ | |
777 | ||
778 | /* | |
779 | * This generation number is used to test if the new fields are valid | |
780 | * and up to date while reading the root item. Everytime the root item | |
781 | * is written out, the "generation" field is copied into this field. If | |
782 | * anyone ever mounted the fs with an older kernel, we will have | |
783 | * mismatching generation values here and thus must invalidate the | |
784 | * new fields. See btrfs_update_root and btrfs_find_last_root for | |
785 | * details. | |
786 | * the offset of generation_v2 is also used as the start for the memset | |
787 | * when invalidating the fields. | |
788 | */ | |
789 | __le64 generation_v2; | |
790 | u8 uuid[BTRFS_UUID_SIZE]; | |
791 | u8 parent_uuid[BTRFS_UUID_SIZE]; | |
792 | u8 received_uuid[BTRFS_UUID_SIZE]; | |
793 | __le64 ctransid; /* updated when an inode changes */ | |
794 | __le64 otransid; /* trans when created */ | |
795 | __le64 stransid; /* trans when sent. non-zero for received subvol */ | |
796 | __le64 rtransid; /* trans when received. non-zero for received subvol */ | |
797 | struct btrfs_timespec ctime; | |
798 | struct btrfs_timespec otime; | |
799 | struct btrfs_timespec stime; | |
800 | struct btrfs_timespec rtime; | |
801 | __le64 reserved[8]; /* for future */ | |
9f5fae2f | 802 | } __attribute__ ((__packed__)); |
62e2749e | 803 | |
0660b5af CM |
804 | /* |
805 | * this is used for both forward and backward root refs | |
806 | */ | |
807 | struct btrfs_root_ref { | |
808 | __le64 dirid; | |
809 | __le64 sequence; | |
810 | __le16 name_len; | |
811 | } __attribute__ ((__packed__)); | |
812 | ||
0940ebf6 ID |
813 | struct btrfs_disk_balance_args { |
814 | /* | |
815 | * profiles to operate on, single is denoted by | |
816 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
817 | */ | |
818 | __le64 profiles; | |
819 | ||
820 | /* usage filter */ | |
821 | __le64 usage; | |
822 | ||
823 | /* devid filter */ | |
824 | __le64 devid; | |
825 | ||
826 | /* devid subset filter [pstart..pend) */ | |
827 | __le64 pstart; | |
828 | __le64 pend; | |
829 | ||
830 | /* btrfs virtual address space subset filter [vstart..vend) */ | |
831 | __le64 vstart; | |
832 | __le64 vend; | |
833 | ||
834 | /* | |
835 | * profile to convert to, single is denoted by | |
836 | * BTRFS_AVAIL_ALLOC_BIT_SINGLE | |
837 | */ | |
838 | __le64 target; | |
839 | ||
840 | /* BTRFS_BALANCE_ARGS_* */ | |
841 | __le64 flags; | |
842 | ||
843 | __le64 unused[8]; | |
844 | } __attribute__ ((__packed__)); | |
845 | ||
846 | /* | |
847 | * store balance parameters to disk so that balance can be properly | |
848 | * resumed after crash or unmount | |
849 | */ | |
850 | struct btrfs_balance_item { | |
851 | /* BTRFS_BALANCE_* */ | |
852 | __le64 flags; | |
853 | ||
854 | struct btrfs_disk_balance_args data; | |
855 | struct btrfs_disk_balance_args meta; | |
856 | struct btrfs_disk_balance_args sys; | |
857 | ||
858 | __le64 unused[4]; | |
859 | } __attribute__ ((__packed__)); | |
860 | ||
d899e052 YZ |
861 | #define BTRFS_FILE_EXTENT_INLINE 0 |
862 | #define BTRFS_FILE_EXTENT_REG 1 | |
863 | #define BTRFS_FILE_EXTENT_PREALLOC 2 | |
236454df | 864 | |
9f5fae2f | 865 | struct btrfs_file_extent_item { |
c8b97818 CM |
866 | /* |
867 | * transaction id that created this extent | |
868 | */ | |
71951f35 | 869 | __le64 generation; |
c8b97818 CM |
870 | /* |
871 | * max number of bytes to hold this extent in ram | |
872 | * when we split a compressed extent we can't know how big | |
873 | * each of the resulting pieces will be. So, this is | |
874 | * an upper limit on the size of the extent in ram instead of | |
875 | * an exact limit. | |
876 | */ | |
877 | __le64 ram_bytes; | |
878 | ||
879 | /* | |
880 | * 32 bits for the various ways we might encode the data, | |
881 | * including compression and encryption. If any of these | |
882 | * are set to something a given disk format doesn't understand | |
883 | * it is treated like an incompat flag for reading and writing, | |
884 | * but not for stat. | |
885 | */ | |
886 | u8 compression; | |
887 | u8 encryption; | |
888 | __le16 other_encoding; /* spare for later use */ | |
889 | ||
890 | /* are we inline data or a real extent? */ | |
236454df | 891 | u8 type; |
c8b97818 | 892 | |
9f5fae2f CM |
893 | /* |
894 | * disk space consumed by the extent, checksum blocks are included | |
895 | * in these numbers | |
896 | */ | |
db94535d CM |
897 | __le64 disk_bytenr; |
898 | __le64 disk_num_bytes; | |
9f5fae2f | 899 | /* |
dee26a9f | 900 | * the logical offset in file blocks (no csums) |
9f5fae2f CM |
901 | * this extent record is for. This allows a file extent to point |
902 | * into the middle of an existing extent on disk, sharing it | |
903 | * between two snapshots (useful if some bytes in the middle of the | |
904 | * extent have changed | |
905 | */ | |
906 | __le64 offset; | |
907 | /* | |
c8b97818 CM |
908 | * the logical number of file blocks (no csums included). This |
909 | * always reflects the size uncompressed and without encoding. | |
9f5fae2f | 910 | */ |
db94535d | 911 | __le64 num_bytes; |
c8b97818 | 912 | |
9f5fae2f CM |
913 | } __attribute__ ((__packed__)); |
914 | ||
f254e52c | 915 | struct btrfs_csum_item { |
509659cd | 916 | u8 csum; |
f254e52c CM |
917 | } __attribute__ ((__packed__)); |
918 | ||
733f4fbb SB |
919 | struct btrfs_dev_stats_item { |
920 | /* | |
921 | * grow this item struct at the end for future enhancements and keep | |
922 | * the existing values unchanged | |
923 | */ | |
924 | __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; | |
925 | } __attribute__ ((__packed__)); | |
926 | ||
e922e087 SB |
927 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0 |
928 | #define BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_AVOID 1 | |
929 | #define BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED 0 | |
930 | #define BTRFS_DEV_REPLACE_ITEM_STATE_STARTED 1 | |
931 | #define BTRFS_DEV_REPLACE_ITEM_STATE_SUSPENDED 2 | |
932 | #define BTRFS_DEV_REPLACE_ITEM_STATE_FINISHED 3 | |
933 | #define BTRFS_DEV_REPLACE_ITEM_STATE_CANCELED 4 | |
934 | ||
935 | struct btrfs_dev_replace { | |
936 | u64 replace_state; /* see #define above */ | |
937 | u64 time_started; /* seconds since 1-Jan-1970 */ | |
938 | u64 time_stopped; /* seconds since 1-Jan-1970 */ | |
939 | atomic64_t num_write_errors; | |
940 | atomic64_t num_uncorrectable_read_errors; | |
941 | ||
942 | u64 cursor_left; | |
943 | u64 committed_cursor_left; | |
944 | u64 cursor_left_last_write_of_item; | |
945 | u64 cursor_right; | |
946 | ||
947 | u64 cont_reading_from_srcdev_mode; /* see #define above */ | |
948 | ||
949 | int is_valid; | |
950 | int item_needs_writeback; | |
951 | struct btrfs_device *srcdev; | |
952 | struct btrfs_device *tgtdev; | |
953 | ||
954 | pid_t lock_owner; | |
955 | atomic_t nesting_level; | |
956 | struct mutex lock_finishing_cancel_unmount; | |
957 | struct mutex lock_management_lock; | |
958 | struct mutex lock; | |
959 | ||
960 | struct btrfs_scrub_progress scrub_progress; | |
961 | }; | |
962 | ||
a2bff640 SB |
963 | struct btrfs_dev_replace_item { |
964 | /* | |
965 | * grow this item struct at the end for future enhancements and keep | |
966 | * the existing values unchanged | |
967 | */ | |
968 | __le64 src_devid; | |
969 | __le64 cursor_left; | |
970 | __le64 cursor_right; | |
971 | __le64 cont_reading_from_srcdev_mode; | |
972 | ||
973 | __le64 replace_state; | |
974 | __le64 time_started; | |
975 | __le64 time_stopped; | |
976 | __le64 num_write_errors; | |
977 | __le64 num_uncorrectable_read_errors; | |
978 | } __attribute__ ((__packed__)); | |
979 | ||
0b86a832 | 980 | /* different types of block groups (and chunks) */ |
52ba6929 ID |
981 | #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) |
982 | #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) | |
983 | #define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2) | |
984 | #define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3) | |
985 | #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) | |
986 | #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) | |
987 | #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) | |
1c89cdd1 AP |
988 | #define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7) |
989 | #define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8) | |
36523e95 DS |
990 | #define BTRFS_BLOCK_GROUP_RESERVED (BTRFS_AVAIL_ALLOC_BIT_SINGLE | \ |
991 | BTRFS_SPACE_INFO_GLOBAL_RSV) | |
e6ec716f MX |
992 | |
993 | enum btrfs_raid_types { | |
994 | BTRFS_RAID_RAID10, | |
995 | BTRFS_RAID_RAID1, | |
996 | BTRFS_RAID_DUP, | |
997 | BTRFS_RAID_RAID0, | |
998 | BTRFS_RAID_SINGLE, | |
e942f883 CM |
999 | BTRFS_RAID_RAID5, |
1000 | BTRFS_RAID_RAID6, | |
e6ec716f MX |
1001 | BTRFS_NR_RAID_TYPES |
1002 | }; | |
52ba6929 ID |
1003 | |
1004 | #define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ | |
1005 | BTRFS_BLOCK_GROUP_SYSTEM | \ | |
1006 | BTRFS_BLOCK_GROUP_METADATA) | |
1007 | ||
1008 | #define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ | |
1009 | BTRFS_BLOCK_GROUP_RAID1 | \ | |
53b381b3 DW |
1010 | BTRFS_BLOCK_GROUP_RAID5 | \ |
1011 | BTRFS_BLOCK_GROUP_RAID6 | \ | |
52ba6929 ID |
1012 | BTRFS_BLOCK_GROUP_DUP | \ |
1013 | BTRFS_BLOCK_GROUP_RAID10) | |
a46d11a8 ID |
1014 | /* |
1015 | * We need a bit for restriper to be able to tell when chunks of type | |
1016 | * SINGLE are available. This "extended" profile format is used in | |
1017 | * fs_info->avail_*_alloc_bits (in-memory) and balance item fields | |
1018 | * (on-disk). The corresponding on-disk bit in chunk.type is reserved | |
1019 | * to avoid remappings between two formats in future. | |
1020 | */ | |
1021 | #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) | |
1022 | ||
36523e95 DS |
1023 | /* |
1024 | * A fake block group type that is used to communicate global block reserve | |
1025 | * size to userspace via the SPACE_INFO ioctl. | |
1026 | */ | |
1027 | #define BTRFS_SPACE_INFO_GLOBAL_RSV (1ULL << 49) | |
1028 | ||
899c81ea ID |
1029 | #define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ |
1030 | BTRFS_AVAIL_ALLOC_BIT_SINGLE) | |
1031 | ||
1032 | static inline u64 chunk_to_extended(u64 flags) | |
1033 | { | |
1034 | if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) | |
1035 | flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
1036 | ||
1037 | return flags; | |
1038 | } | |
1039 | static inline u64 extended_to_chunk(u64 flags) | |
1040 | { | |
1041 | return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; | |
1042 | } | |
1043 | ||
9078a3e1 CM |
1044 | struct btrfs_block_group_item { |
1045 | __le64 used; | |
0b86a832 CM |
1046 | __le64 chunk_objectid; |
1047 | __le64 flags; | |
9078a3e1 CM |
1048 | } __attribute__ ((__packed__)); |
1049 | ||
630dc772 AJ |
1050 | /* |
1051 | * is subvolume quota turned on? | |
1052 | */ | |
1053 | #define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) | |
1054 | /* | |
2f232036 | 1055 | * RESCAN is set during the initialization phase |
630dc772 | 1056 | */ |
2f232036 | 1057 | #define BTRFS_QGROUP_STATUS_FLAG_RESCAN (1ULL << 1) |
630dc772 AJ |
1058 | /* |
1059 | * Some qgroup entries are known to be out of date, | |
1060 | * either because the configuration has changed in a way that | |
1061 | * makes a rescan necessary, or because the fs has been mounted | |
1062 | * with a non-qgroup-aware version. | |
1063 | * Turning qouta off and on again makes it inconsistent, too. | |
1064 | */ | |
1065 | #define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) | |
1066 | ||
1067 | #define BTRFS_QGROUP_STATUS_VERSION 1 | |
1068 | ||
1069 | struct btrfs_qgroup_status_item { | |
1070 | __le64 version; | |
1071 | /* | |
1072 | * the generation is updated during every commit. As older | |
1073 | * versions of btrfs are not aware of qgroups, it will be | |
1074 | * possible to detect inconsistencies by checking the | |
1075 | * generation on mount time | |
1076 | */ | |
1077 | __le64 generation; | |
1078 | ||
1079 | /* flag definitions see above */ | |
1080 | __le64 flags; | |
1081 | ||
1082 | /* | |
1083 | * only used during scanning to record the progress | |
1084 | * of the scan. It contains a logical address | |
1085 | */ | |
2f232036 | 1086 | __le64 rescan; |
630dc772 AJ |
1087 | } __attribute__ ((__packed__)); |
1088 | ||
1089 | struct btrfs_qgroup_info_item { | |
1090 | __le64 generation; | |
1091 | __le64 rfer; | |
1092 | __le64 rfer_cmpr; | |
1093 | __le64 excl; | |
1094 | __le64 excl_cmpr; | |
1095 | } __attribute__ ((__packed__)); | |
1096 | ||
1097 | /* flags definition for qgroup limits */ | |
1098 | #define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) | |
1099 | #define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) | |
1100 | #define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) | |
1101 | #define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) | |
1102 | #define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) | |
1103 | #define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) | |
1104 | ||
1105 | struct btrfs_qgroup_limit_item { | |
1106 | /* | |
1107 | * only updated when any of the other values change | |
1108 | */ | |
1109 | __le64 flags; | |
1110 | __le64 max_rfer; | |
1111 | __le64 max_excl; | |
1112 | __le64 rsv_rfer; | |
1113 | __le64 rsv_excl; | |
1114 | } __attribute__ ((__packed__)); | |
1115 | ||
6324fbf3 | 1116 | struct btrfs_space_info { |
26b47ff6 | 1117 | spinlock_t lock; |
6a63209f | 1118 | |
89a55897 JB |
1119 | u64 total_bytes; /* total bytes in the space, |
1120 | this doesn't take mirrors into account */ | |
b742bb82 | 1121 | u64 bytes_used; /* total bytes used, |
e9c54999 | 1122 | this doesn't take mirrors into account */ |
6a63209f JB |
1123 | u64 bytes_pinned; /* total bytes pinned, will be freed when the |
1124 | transaction finishes */ | |
1125 | u64 bytes_reserved; /* total bytes the allocator has reserved for | |
1126 | current allocations */ | |
6a63209f | 1127 | u64 bytes_may_use; /* number of bytes that may be used for |
9ed74f2d | 1128 | delalloc/allocations */ |
26b47ff6 MX |
1129 | u64 bytes_readonly; /* total bytes that are read only */ |
1130 | ||
1131 | unsigned int full:1; /* indicates that we cannot allocate any more | |
1132 | chunks for this space */ | |
1133 | unsigned int chunk_alloc:1; /* set if we are allocating a chunk */ | |
1134 | ||
1135 | unsigned int flush:1; /* set if we are trying to make space */ | |
1136 | ||
1137 | unsigned int force_alloc; /* set if we need to force a chunk | |
1138 | alloc for this space */ | |
1139 | ||
b742bb82 | 1140 | u64 disk_used; /* total bytes used on disk */ |
89a55897 JB |
1141 | u64 disk_total; /* total bytes on disk, takes mirrors into |
1142 | account */ | |
6a63209f | 1143 | |
26b47ff6 MX |
1144 | u64 flags; |
1145 | ||
b150a4f1 JB |
1146 | /* |
1147 | * bytes_pinned is kept in line with what is actually pinned, as in | |
1148 | * we've called update_block_group and dropped the bytes_used counter | |
1149 | * and increased the bytes_pinned counter. However this means that | |
1150 | * bytes_pinned does not reflect the bytes that will be pinned once the | |
1151 | * delayed refs are flushed, so this counter is inc'ed everytime we call | |
1152 | * btrfs_free_extent so it is a realtime count of what will be freed | |
1153 | * once the transaction is committed. It will be zero'ed everytime the | |
1154 | * transaction commits. | |
1155 | */ | |
1156 | struct percpu_counter total_bytes_pinned; | |
1157 | ||
6324fbf3 | 1158 | struct list_head list; |
0f9dd46c | 1159 | |
26b47ff6 | 1160 | struct rw_semaphore groups_sem; |
0f9dd46c | 1161 | /* for block groups in our same type */ |
b742bb82 | 1162 | struct list_head block_groups[BTRFS_NR_RAID_TYPES]; |
fdb5effd | 1163 | wait_queue_head_t wait; |
6ab0a202 JM |
1164 | |
1165 | struct kobject kobj; | |
1166 | struct kobject block_group_kobjs[BTRFS_NR_RAID_TYPES]; | |
0f9dd46c JB |
1167 | }; |
1168 | ||
66d8f3dd MX |
1169 | #define BTRFS_BLOCK_RSV_GLOBAL 1 |
1170 | #define BTRFS_BLOCK_RSV_DELALLOC 2 | |
1171 | #define BTRFS_BLOCK_RSV_TRANS 3 | |
1172 | #define BTRFS_BLOCK_RSV_CHUNK 4 | |
1173 | #define BTRFS_BLOCK_RSV_DELOPS 5 | |
1174 | #define BTRFS_BLOCK_RSV_EMPTY 6 | |
1175 | #define BTRFS_BLOCK_RSV_TEMP 7 | |
1176 | ||
f0486c68 YZ |
1177 | struct btrfs_block_rsv { |
1178 | u64 size; | |
1179 | u64 reserved; | |
f0486c68 | 1180 | struct btrfs_space_info *space_info; |
f0486c68 | 1181 | spinlock_t lock; |
66d8f3dd MX |
1182 | unsigned short full; |
1183 | unsigned short type; | |
1184 | unsigned short failfast; | |
f0486c68 YZ |
1185 | }; |
1186 | ||
fa9c0d79 CM |
1187 | /* |
1188 | * free clusters are used to claim free space in relatively large chunks, | |
1189 | * allowing us to do less seeky writes. They are used for all metadata | |
1190 | * allocations and data allocations in ssd mode. | |
1191 | */ | |
1192 | struct btrfs_free_cluster { | |
1193 | spinlock_t lock; | |
1194 | spinlock_t refill_lock; | |
1195 | struct rb_root root; | |
1196 | ||
1197 | /* largest extent in this cluster */ | |
1198 | u64 max_size; | |
1199 | ||
1200 | /* first extent starting offset */ | |
1201 | u64 window_start; | |
1202 | ||
1203 | struct btrfs_block_group_cache *block_group; | |
1204 | /* | |
1205 | * when a cluster is allocated from a block group, we put the | |
1206 | * cluster onto a list in the block group so that it can | |
1207 | * be freed before the block group is freed. | |
1208 | */ | |
1209 | struct list_head block_group_list; | |
6324fbf3 CM |
1210 | }; |
1211 | ||
817d52f8 JB |
1212 | enum btrfs_caching_type { |
1213 | BTRFS_CACHE_NO = 0, | |
1214 | BTRFS_CACHE_STARTED = 1, | |
291c7d2f JB |
1215 | BTRFS_CACHE_FAST = 2, |
1216 | BTRFS_CACHE_FINISHED = 3, | |
36cce922 | 1217 | BTRFS_CACHE_ERROR = 4, |
817d52f8 JB |
1218 | }; |
1219 | ||
0af3d00b JB |
1220 | enum btrfs_disk_cache_state { |
1221 | BTRFS_DC_WRITTEN = 0, | |
1222 | BTRFS_DC_ERROR = 1, | |
1223 | BTRFS_DC_CLEAR = 2, | |
1224 | BTRFS_DC_SETUP = 3, | |
1225 | BTRFS_DC_NEED_WRITE = 4, | |
1226 | }; | |
1227 | ||
11833d66 YZ |
1228 | struct btrfs_caching_control { |
1229 | struct list_head list; | |
1230 | struct mutex mutex; | |
1231 | wait_queue_head_t wait; | |
bab39bf9 | 1232 | struct btrfs_work work; |
11833d66 YZ |
1233 | struct btrfs_block_group_cache *block_group; |
1234 | u64 progress; | |
1235 | atomic_t count; | |
1236 | }; | |
1237 | ||
9078a3e1 CM |
1238 | struct btrfs_block_group_cache { |
1239 | struct btrfs_key key; | |
1240 | struct btrfs_block_group_item item; | |
817d52f8 | 1241 | struct btrfs_fs_info *fs_info; |
0af3d00b | 1242 | struct inode *inode; |
c286ac48 | 1243 | spinlock_t lock; |
324ae4df | 1244 | u64 pinned; |
e8569813 | 1245 | u64 reserved; |
1b2da372 | 1246 | u64 bytes_super; |
0b86a832 | 1247 | u64 flags; |
96303081 | 1248 | u64 sectorsize; |
5b0e95bf | 1249 | u64 cache_generation; |
53b381b3 DW |
1250 | |
1251 | /* for raid56, this is a full stripe, without parity */ | |
1252 | unsigned long full_stripe_len; | |
1253 | ||
0410c94a MK |
1254 | unsigned int ro:1; |
1255 | unsigned int dirty:1; | |
1256 | unsigned int iref:1; | |
0af3d00b JB |
1257 | |
1258 | int disk_cache_state; | |
0f9dd46c | 1259 | |
817d52f8 | 1260 | /* cache tracking stuff */ |
817d52f8 | 1261 | int cached; |
11833d66 YZ |
1262 | struct btrfs_caching_control *caching_ctl; |
1263 | u64 last_byte_to_unpin; | |
817d52f8 | 1264 | |
0f9dd46c JB |
1265 | struct btrfs_space_info *space_info; |
1266 | ||
1267 | /* free space cache stuff */ | |
34d52cb6 | 1268 | struct btrfs_free_space_ctl *free_space_ctl; |
0f9dd46c JB |
1269 | |
1270 | /* block group cache stuff */ | |
1271 | struct rb_node cache_node; | |
1272 | ||
1273 | /* for block groups in the same raid type */ | |
1274 | struct list_head list; | |
d2fb3437 YZ |
1275 | |
1276 | /* usage count */ | |
1277 | atomic_t count; | |
fa9c0d79 CM |
1278 | |
1279 | /* List of struct btrfs_free_clusters for this block group. | |
1280 | * Today it will only have one thing on it, but that may change | |
1281 | */ | |
1282 | struct list_head cluster_list; | |
ea658bad JB |
1283 | |
1284 | /* For delayed block group creation */ | |
1285 | struct list_head new_bg_list; | |
9078a3e1 | 1286 | }; |
0b86a832 | 1287 | |
097b8a7c JS |
1288 | /* delayed seq elem */ |
1289 | struct seq_list { | |
1290 | struct list_head list; | |
1291 | u64 seq; | |
1292 | }; | |
1293 | ||
5d80366e JB |
1294 | enum btrfs_orphan_cleanup_state { |
1295 | ORPHAN_CLEANUP_STARTED = 1, | |
1296 | ORPHAN_CLEANUP_DONE = 2, | |
1297 | }; | |
1298 | ||
53b381b3 DW |
1299 | /* used by the raid56 code to lock stripes for read/modify/write */ |
1300 | struct btrfs_stripe_hash { | |
1301 | struct list_head hash_list; | |
1302 | wait_queue_head_t wait; | |
1303 | spinlock_t lock; | |
1304 | }; | |
1305 | ||
1306 | /* used by the raid56 code to lock stripes for read/modify/write */ | |
1307 | struct btrfs_stripe_hash_table { | |
4ae10b3a CM |
1308 | struct list_head stripe_cache; |
1309 | spinlock_t cache_lock; | |
1310 | int cache_size; | |
1311 | struct btrfs_stripe_hash table[]; | |
53b381b3 DW |
1312 | }; |
1313 | ||
1314 | #define BTRFS_STRIPE_HASH_TABLE_BITS 11 | |
1315 | ||
097b8a7c | 1316 | /* fs_info */ |
5d4f98a2 | 1317 | struct reloc_control; |
0b86a832 | 1318 | struct btrfs_device; |
8a4b83cc | 1319 | struct btrfs_fs_devices; |
c9e9f97b | 1320 | struct btrfs_balance_control; |
16cdcec7 | 1321 | struct btrfs_delayed_root; |
9f5fae2f | 1322 | struct btrfs_fs_info { |
5f39d397 | 1323 | u8 fsid[BTRFS_FSID_SIZE]; |
e17cade2 | 1324 | u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; |
62e2749e CM |
1325 | struct btrfs_root *extent_root; |
1326 | struct btrfs_root *tree_root; | |
0b86a832 CM |
1327 | struct btrfs_root *chunk_root; |
1328 | struct btrfs_root *dev_root; | |
3de4586c | 1329 | struct btrfs_root *fs_root; |
d20f7043 | 1330 | struct btrfs_root *csum_root; |
416ac51d | 1331 | struct btrfs_root *quota_root; |
f7a81ea4 | 1332 | struct btrfs_root *uuid_root; |
e02119d5 CM |
1333 | |
1334 | /* the log root tree is a directory of all the other log roots */ | |
1335 | struct btrfs_root *log_root_tree; | |
4df27c4d YZ |
1336 | |
1337 | spinlock_t fs_roots_radix_lock; | |
0f7d52f4 | 1338 | struct radix_tree_root fs_roots_radix; |
1a5bc167 | 1339 | |
0f9dd46c JB |
1340 | /* block group cache stuff */ |
1341 | spinlock_t block_group_cache_lock; | |
a1897fdd | 1342 | u64 first_logical_byte; |
0f9dd46c JB |
1343 | struct rb_root block_group_cache_tree; |
1344 | ||
2bf64758 JB |
1345 | /* keep track of unallocated space */ |
1346 | spinlock_t free_chunk_lock; | |
1347 | u64 free_chunk_space; | |
1348 | ||
11833d66 YZ |
1349 | struct extent_io_tree freed_extents[2]; |
1350 | struct extent_io_tree *pinned_extents; | |
1a5bc167 | 1351 | |
0b86a832 CM |
1352 | /* logical->physical extent mapping */ |
1353 | struct btrfs_mapping_tree mapping_tree; | |
1354 | ||
16cdcec7 MX |
1355 | /* |
1356 | * block reservation for extent, checksum, root tree and | |
1357 | * delayed dir index item | |
1358 | */ | |
f0486c68 YZ |
1359 | struct btrfs_block_rsv global_block_rsv; |
1360 | /* block reservation for delay allocation */ | |
1361 | struct btrfs_block_rsv delalloc_block_rsv; | |
1362 | /* block reservation for metadata operations */ | |
1363 | struct btrfs_block_rsv trans_block_rsv; | |
1364 | /* block reservation for chunk tree */ | |
1365 | struct btrfs_block_rsv chunk_block_rsv; | |
6d668dda JB |
1366 | /* block reservation for delayed operations */ |
1367 | struct btrfs_block_rsv delayed_block_rsv; | |
f0486c68 YZ |
1368 | |
1369 | struct btrfs_block_rsv empty_block_rsv; | |
1370 | ||
293ffd5f | 1371 | u64 generation; |
15ee9bc7 | 1372 | u64 last_trans_committed; |
0a2b2a84 | 1373 | u64 avg_delayed_ref_runtime; |
12fcfd22 CM |
1374 | |
1375 | /* | |
1376 | * this is updated to the current trans every time a full commit | |
1377 | * is required instead of the faster short fsync log commits | |
1378 | */ | |
1379 | u64 last_trans_log_full_commit; | |
25cd999e | 1380 | unsigned long mount_opt; |
261507a0 | 1381 | unsigned long compress_type:4; |
8b87dc17 | 1382 | int commit_interval; |
8c6a3ee6 MX |
1383 | /* |
1384 | * It is a suggestive number, the read side is safe even it gets a | |
1385 | * wrong number because we will write out the data into a regular | |
1386 | * extent. The write side(mount/remount) is under ->s_umount lock, | |
1387 | * so it is also safe. | |
1388 | */ | |
6f568d35 | 1389 | u64 max_inline; |
c018daec MX |
1390 | /* |
1391 | * Protected by ->chunk_mutex and sb->s_umount. | |
1392 | * | |
1393 | * The reason that we use two lock to protect it is because only | |
1394 | * remount and mount operations can change it and these two operations | |
1395 | * are under sb->s_umount, but the read side (chunk allocation) can not | |
1396 | * acquire sb->s_umount or the deadlock would happen. So we use two | |
1397 | * locks to protect it. On the write side, we must acquire two locks, | |
1398 | * and on the read side, we just need acquire one of them. | |
1399 | */ | |
8f662a76 | 1400 | u64 alloc_start; |
79154b1b | 1401 | struct btrfs_transaction *running_transaction; |
e6dcd2dc | 1402 | wait_queue_head_t transaction_throttle; |
f9295749 | 1403 | wait_queue_head_t transaction_wait; |
bb9c12c9 | 1404 | wait_queue_head_t transaction_blocked_wait; |
771ed689 | 1405 | wait_queue_head_t async_submit_wait; |
e02119d5 | 1406 | |
ceda0864 MX |
1407 | /* |
1408 | * Used to protect the incompat_flags, compat_flags, compat_ro_flags | |
1409 | * when they are updated. | |
1410 | * | |
1411 | * Because we do not clear the flags for ever, so we needn't use | |
1412 | * the lock on the read side. | |
1413 | * | |
1414 | * We also needn't use the lock when we mount the fs, because | |
1415 | * there is no other task which will update the flag. | |
1416 | */ | |
1417 | spinlock_t super_lock; | |
6c41761f DS |
1418 | struct btrfs_super_block *super_copy; |
1419 | struct btrfs_super_block *super_for_commit; | |
0b86a832 | 1420 | struct block_device *__bdev; |
e20d96d6 | 1421 | struct super_block *sb; |
d98237b3 | 1422 | struct inode *btree_inode; |
04160088 | 1423 | struct backing_dev_info bdi; |
e02119d5 | 1424 | struct mutex tree_log_mutex; |
a74a4b97 CM |
1425 | struct mutex transaction_kthread_mutex; |
1426 | struct mutex cleaner_mutex; | |
925baedd | 1427 | struct mutex chunk_mutex; |
7d9eb12c | 1428 | struct mutex volume_mutex; |
53b381b3 DW |
1429 | |
1430 | /* this is used during read/modify/write to make sure | |
1431 | * no two ios are trying to mod the same stripe at the same | |
1432 | * time | |
1433 | */ | |
1434 | struct btrfs_stripe_hash_table *stripe_hash_table; | |
1435 | ||
5a3f23d5 CM |
1436 | /* |
1437 | * this protects the ordered operations list only while we are | |
1438 | * processing all of the entries on it. This way we make | |
1439 | * sure the commit code doesn't find the list temporarily empty | |
1440 | * because another function happens to be doing non-waiting preflush | |
1441 | * before jumping into the main commit. | |
1442 | */ | |
1443 | struct mutex ordered_operations_mutex; | |
9ffba8cd JB |
1444 | |
1445 | /* | |
1446 | * Same as ordered_operations_mutex except this is for ordered extents | |
1447 | * and not the operations. | |
1448 | */ | |
1449 | struct mutex ordered_extent_flush_mutex; | |
1450 | ||
9e351cc8 | 1451 | struct rw_semaphore commit_root_sem; |
5a3f23d5 | 1452 | |
c71bf099 | 1453 | struct rw_semaphore cleanup_work_sem; |
76dda93c | 1454 | |
c71bf099 | 1455 | struct rw_semaphore subvol_sem; |
76dda93c YZ |
1456 | struct srcu_struct subvol_srcu; |
1457 | ||
a4abeea4 | 1458 | spinlock_t trans_lock; |
7585717f CM |
1459 | /* |
1460 | * the reloc mutex goes with the trans lock, it is taken | |
1461 | * during commit to protect us from the relocation code | |
1462 | */ | |
1463 | struct mutex reloc_mutex; | |
1464 | ||
8fd17795 | 1465 | struct list_head trans_list; |
facda1e7 | 1466 | struct list_head dead_roots; |
11833d66 | 1467 | struct list_head caching_block_groups; |
e02119d5 | 1468 | |
24bbcf04 YZ |
1469 | spinlock_t delayed_iput_lock; |
1470 | struct list_head delayed_iputs; | |
1471 | ||
f29021b2 JS |
1472 | /* this protects tree_mod_seq_list */ |
1473 | spinlock_t tree_mod_seq_lock; | |
fc36ed7e | 1474 | atomic64_t tree_mod_seq; |
f29021b2 JS |
1475 | struct list_head tree_mod_seq_list; |
1476 | ||
1477 | /* this protects tree_mod_log */ | |
1478 | rwlock_t tree_mod_log_lock; | |
1479 | struct rb_root tree_mod_log; | |
1480 | ||
cb03c743 | 1481 | atomic_t nr_async_submits; |
8c8bee1d | 1482 | atomic_t async_submit_draining; |
0986fe9e | 1483 | atomic_t nr_async_bios; |
771ed689 | 1484 | atomic_t async_delalloc_pages; |
a4abeea4 | 1485 | atomic_t open_ioctl_trans; |
ce9adaa5 | 1486 | |
3eaa2885 | 1487 | /* |
199c2a9c | 1488 | * this is used to protect the following list -- ordered_roots. |
3eaa2885 | 1489 | */ |
199c2a9c | 1490 | spinlock_t ordered_root_lock; |
5a3f23d5 CM |
1491 | |
1492 | /* | |
199c2a9c MX |
1493 | * all fs/file tree roots in which there are data=ordered extents |
1494 | * pending writeback are added into this list. | |
1495 | * | |
5a3f23d5 CM |
1496 | * these can span multiple transactions and basically include |
1497 | * every dirty data page that isn't from nodatacow | |
1498 | */ | |
199c2a9c | 1499 | struct list_head ordered_roots; |
5a3f23d5 | 1500 | |
573bfb72 | 1501 | struct mutex delalloc_root_mutex; |
eb73c1b7 MX |
1502 | spinlock_t delalloc_root_lock; |
1503 | /* all fs/file tree roots that have delalloc inodes. */ | |
1504 | struct list_head delalloc_roots; | |
3eaa2885 | 1505 | |
8b712842 CM |
1506 | /* |
1507 | * there is a pool of worker threads for checksumming during writes | |
1508 | * and a pool for checksumming after reads. This is because readers | |
1509 | * can run with FS locks held, and the writers may be waiting for | |
1510 | * those locks. We don't want ordering in the pending list to cause | |
1511 | * deadlocks, and so the two are serviced separately. | |
1cc127b5 CM |
1512 | * |
1513 | * A third pool does submit_bio to avoid deadlocking with the other | |
1514 | * two | |
8b712842 | 1515 | */ |
d458b054 QW |
1516 | struct btrfs_workqueue *workers; |
1517 | struct btrfs_workqueue *delalloc_workers; | |
1518 | struct btrfs_workqueue *flush_workers; | |
1519 | struct btrfs_workqueue *endio_workers; | |
1520 | struct btrfs_workqueue *endio_meta_workers; | |
1521 | struct btrfs_workqueue *endio_raid56_workers; | |
1522 | struct btrfs_workqueue *rmw_workers; | |
1523 | struct btrfs_workqueue *endio_meta_write_workers; | |
1524 | struct btrfs_workqueue *endio_write_workers; | |
1525 | struct btrfs_workqueue *endio_freespace_worker; | |
1526 | struct btrfs_workqueue *submit_workers; | |
1527 | struct btrfs_workqueue *caching_workers; | |
1528 | struct btrfs_workqueue *readahead_workers; | |
bab39bf9 | 1529 | |
247e743c CM |
1530 | /* |
1531 | * fixup workers take dirty pages that didn't properly go through | |
1532 | * the cow mechanism and make them safe to write. It happens | |
1533 | * for the sys_munmap function call path | |
1534 | */ | |
d458b054 QW |
1535 | struct btrfs_workqueue *fixup_workers; |
1536 | struct btrfs_workqueue *delayed_workers; | |
a74a4b97 CM |
1537 | struct task_struct *transaction_kthread; |
1538 | struct task_struct *cleaner_kthread; | |
4543df7e | 1539 | int thread_pool_size; |
8b712842 | 1540 | |
58176a96 | 1541 | struct kobject super_kobj; |
6ab0a202 | 1542 | struct kobject *space_info_kobj; |
29e5be24 | 1543 | struct kobject *device_dir_kobj; |
58176a96 | 1544 | struct completion kobj_unregister; |
e66f709b | 1545 | int do_barriers; |
facda1e7 | 1546 | int closing; |
e02119d5 | 1547 | int log_root_recovering; |
9f5fae2f | 1548 | |
324ae4df | 1549 | u64 total_pinned; |
b9473439 | 1550 | |
e2d84521 MX |
1551 | /* used to keep from writing metadata until there is a nice batch */ |
1552 | struct percpu_counter dirty_metadata_bytes; | |
963d678b | 1553 | struct percpu_counter delalloc_bytes; |
e2d84521 | 1554 | s32 dirty_metadata_batch; |
963d678b MX |
1555 | s32 delalloc_batch; |
1556 | ||
0b86a832 CM |
1557 | struct list_head dirty_cowonly_roots; |
1558 | ||
8a4b83cc | 1559 | struct btrfs_fs_devices *fs_devices; |
4184ea7f CM |
1560 | |
1561 | /* | |
1562 | * the space_info list is almost entirely read only. It only changes | |
1563 | * when we add a new raid type to the FS, and that happens | |
1564 | * very rarely. RCU is used to protect it. | |
1565 | */ | |
6324fbf3 | 1566 | struct list_head space_info; |
4184ea7f | 1567 | |
b4d7c3c9 LZ |
1568 | struct btrfs_space_info *data_sinfo; |
1569 | ||
5d4f98a2 YZ |
1570 | struct reloc_control *reloc_ctl; |
1571 | ||
fa9c0d79 CM |
1572 | /* data_alloc_cluster is only used in ssd mode */ |
1573 | struct btrfs_free_cluster data_alloc_cluster; | |
1574 | ||
1575 | /* all metadata allocations go through this cluster */ | |
1576 | struct btrfs_free_cluster meta_alloc_cluster; | |
d18a2c44 | 1577 | |
4cb5300b CM |
1578 | /* auto defrag inodes go here */ |
1579 | spinlock_t defrag_inodes_lock; | |
1580 | struct rb_root defrag_inodes; | |
1581 | atomic_t defrag_running; | |
1582 | ||
de98ced9 MX |
1583 | /* Used to protect avail_{data, metadata, system}_alloc_bits */ |
1584 | seqlock_t profiles_lock; | |
a46d11a8 ID |
1585 | /* |
1586 | * these three are in extended format (availability of single | |
1587 | * chunks is denoted by BTRFS_AVAIL_ALLOC_BIT_SINGLE bit, other | |
1588 | * types are denoted by corresponding BTRFS_BLOCK_GROUP_* bits) | |
1589 | */ | |
d18a2c44 CM |
1590 | u64 avail_data_alloc_bits; |
1591 | u64 avail_metadata_alloc_bits; | |
1592 | u64 avail_system_alloc_bits; | |
788f20eb | 1593 | |
c9e9f97b ID |
1594 | /* restriper state */ |
1595 | spinlock_t balance_lock; | |
1596 | struct mutex balance_mutex; | |
837d5b6e ID |
1597 | atomic_t balance_running; |
1598 | atomic_t balance_pause_req; | |
a7e99c69 | 1599 | atomic_t balance_cancel_req; |
c9e9f97b | 1600 | struct btrfs_balance_control *balance_ctl; |
837d5b6e | 1601 | wait_queue_head_t balance_wait_q; |
c9e9f97b | 1602 | |
97e728d4 JB |
1603 | unsigned data_chunk_allocations; |
1604 | unsigned metadata_ratio; | |
1605 | ||
788f20eb | 1606 | void *bdev_holder; |
acce952b | 1607 | |
a2de733c AJ |
1608 | /* private scrub information */ |
1609 | struct mutex scrub_lock; | |
1610 | atomic_t scrubs_running; | |
1611 | atomic_t scrub_pause_req; | |
1612 | atomic_t scrubs_paused; | |
1613 | atomic_t scrub_cancel_req; | |
1614 | wait_queue_head_t scrub_pause_wait; | |
a2de733c | 1615 | int scrub_workers_refcnt; |
d458b054 QW |
1616 | struct btrfs_workqueue *scrub_workers; |
1617 | struct btrfs_workqueue *scrub_wr_completion_workers; | |
1618 | struct btrfs_workqueue *scrub_nocow_workers; | |
a2de733c | 1619 | |
21adbd5c SB |
1620 | #ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY |
1621 | u32 check_integrity_print_mask; | |
1622 | #endif | |
416ac51d AJ |
1623 | /* |
1624 | * quota information | |
1625 | */ | |
1626 | unsigned int quota_enabled:1; | |
1627 | ||
1628 | /* | |
1629 | * quota_enabled only changes state after a commit. This holds the | |
1630 | * next state. | |
1631 | */ | |
1632 | unsigned int pending_quota_state:1; | |
1633 | ||
1634 | /* is qgroup tracking in a consistent state? */ | |
1635 | u64 qgroup_flags; | |
1636 | ||
1637 | /* holds configuration and tracking. Protected by qgroup_lock */ | |
1638 | struct rb_root qgroup_tree; | |
1639 | spinlock_t qgroup_lock; | |
1640 | ||
1e8f9158 WS |
1641 | /* |
1642 | * used to avoid frequently calling ulist_alloc()/ulist_free() | |
1643 | * when doing qgroup accounting, it must be protected by qgroup_lock. | |
1644 | */ | |
1645 | struct ulist *qgroup_ulist; | |
1646 | ||
f2f6ed3d WS |
1647 | /* protect user change for quota operations */ |
1648 | struct mutex qgroup_ioctl_lock; | |
1649 | ||
416ac51d AJ |
1650 | /* list of dirty qgroups to be written at next commit */ |
1651 | struct list_head dirty_qgroups; | |
1652 | ||
1653 | /* used by btrfs_qgroup_record_ref for an efficient tree traversal */ | |
1654 | u64 qgroup_seq; | |
21adbd5c | 1655 | |
2f232036 JS |
1656 | /* qgroup rescan items */ |
1657 | struct mutex qgroup_rescan_lock; /* protects the progress item */ | |
1658 | struct btrfs_key qgroup_rescan_progress; | |
d458b054 | 1659 | struct btrfs_workqueue *qgroup_rescan_workers; |
57254b6e | 1660 | struct completion qgroup_rescan_completion; |
b382a324 | 1661 | struct btrfs_work qgroup_rescan_work; |
2f232036 | 1662 | |
acce952b | 1663 | /* filesystem state */ |
87533c47 | 1664 | unsigned long fs_state; |
16cdcec7 MX |
1665 | |
1666 | struct btrfs_delayed_root *delayed_root; | |
af31f5e5 | 1667 | |
90519d66 AJ |
1668 | /* readahead tree */ |
1669 | spinlock_t reada_lock; | |
1670 | struct radix_tree_root reada_tree; | |
531f4b1a | 1671 | |
f28491e0 JB |
1672 | /* Extent buffer radix tree */ |
1673 | spinlock_t buffer_lock; | |
1674 | struct radix_tree_root buffer_radix; | |
1675 | ||
af31f5e5 CM |
1676 | /* next backup root to be overwritten */ |
1677 | int backup_root_index; | |
5af3e8cc SB |
1678 | |
1679 | int num_tolerated_disk_barrier_failures; | |
e922e087 SB |
1680 | |
1681 | /* device replace state */ | |
1682 | struct btrfs_dev_replace dev_replace; | |
5ac00add SB |
1683 | |
1684 | atomic_t mutually_exclusive_operation_running; | |
803b2f54 | 1685 | |
c404e0dc MX |
1686 | struct percpu_counter bio_counter; |
1687 | wait_queue_head_t replace_wait; | |
1688 | ||
803b2f54 | 1689 | struct semaphore uuid_tree_rescan_sem; |
70f80175 | 1690 | unsigned int update_uuid_tree_gen:1; |
324ae4df | 1691 | }; |
0b86a832 | 1692 | |
8257b2dc MX |
1693 | struct btrfs_subvolume_writers { |
1694 | struct percpu_counter counter; | |
1695 | wait_queue_head_t wait; | |
1696 | }; | |
1697 | ||
9f5fae2f CM |
1698 | /* |
1699 | * in ram representation of the tree. extent_root is used for all allocations | |
f2458e1d | 1700 | * and for the extent tree extent_root root. |
9f5fae2f CM |
1701 | */ |
1702 | struct btrfs_root { | |
5f39d397 | 1703 | struct extent_buffer *node; |
925baedd | 1704 | |
5f39d397 | 1705 | struct extent_buffer *commit_root; |
e02119d5 | 1706 | struct btrfs_root *log_root; |
1a40e23b | 1707 | struct btrfs_root *reloc_root; |
31153d81 | 1708 | |
62e2749e CM |
1709 | struct btrfs_root_item root_item; |
1710 | struct btrfs_key root_key; | |
9f5fae2f | 1711 | struct btrfs_fs_info *fs_info; |
d0c803c4 CM |
1712 | struct extent_io_tree dirty_log_pages; |
1713 | ||
58176a96 JB |
1714 | struct kobject root_kobj; |
1715 | struct completion kobj_unregister; | |
a2135011 | 1716 | struct mutex objectid_mutex; |
7237f183 | 1717 | |
f0486c68 YZ |
1718 | spinlock_t accounting_lock; |
1719 | struct btrfs_block_rsv *block_rsv; | |
1720 | ||
581bb050 | 1721 | /* free ino cache stuff */ |
581bb050 LZ |
1722 | struct btrfs_free_space_ctl *free_ino_ctl; |
1723 | enum btrfs_caching_type cached; | |
1724 | spinlock_t cache_lock; | |
1725 | wait_queue_head_t cache_wait; | |
1726 | struct btrfs_free_space_ctl *free_ino_pinned; | |
1727 | u64 cache_progress; | |
82d5902d | 1728 | struct inode *cache_inode; |
581bb050 | 1729 | |
e02119d5 | 1730 | struct mutex log_mutex; |
7237f183 YZ |
1731 | wait_queue_head_t log_writer_wait; |
1732 | wait_queue_head_t log_commit_wait[2]; | |
8b050d35 | 1733 | struct list_head log_ctxs[2]; |
7237f183 YZ |
1734 | atomic_t log_writers; |
1735 | atomic_t log_commit[2]; | |
2ecb7923 | 1736 | atomic_t log_batch; |
bb14a59b | 1737 | int log_transid; |
d1433deb MX |
1738 | /* No matter the commit succeeds or not*/ |
1739 | int log_transid_committed; | |
1740 | /* Just be updated when the commit succeeds. */ | |
bb14a59b | 1741 | int last_log_commit; |
ff782e0a JB |
1742 | pid_t log_start_pid; |
1743 | bool log_multiple_pids; | |
ea8c2819 | 1744 | |
0f7d52f4 CM |
1745 | u64 objectid; |
1746 | u64 last_trans; | |
5f39d397 CM |
1747 | |
1748 | /* data allocations are done in sectorsize units */ | |
1749 | u32 sectorsize; | |
1750 | ||
1751 | /* node allocations are done in nodesize units */ | |
1752 | u32 nodesize; | |
1753 | ||
1754 | /* leaf allocations are done in leafsize units */ | |
1755 | u32 leafsize; | |
1756 | ||
87ee04eb CM |
1757 | u32 stripesize; |
1758 | ||
9f5fae2f | 1759 | u32 type; |
13a8a7c8 YZ |
1760 | |
1761 | u64 highest_objectid; | |
7585717f CM |
1762 | |
1763 | /* btrfs_record_root_in_trans is a multi-step process, | |
1764 | * and it can race with the balancing code. But the | |
1765 | * race is very small, and only the first time the root | |
1766 | * is added to each transaction. So in_trans_setup | |
1767 | * is used to tell us when more checks are required | |
1768 | */ | |
1769 | unsigned long in_trans_setup; | |
9f3a7427 | 1770 | int ref_cows; |
0b86a832 | 1771 | int track_dirty; |
4df27c4d | 1772 | int in_radix; |
06ea65a3 JB |
1773 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS |
1774 | int dummy_root; | |
1775 | #endif | |
3f157a2f | 1776 | u64 defrag_trans_start; |
6702ed49 | 1777 | struct btrfs_key defrag_progress; |
0ef3e66b | 1778 | struct btrfs_key defrag_max; |
6702ed49 | 1779 | int defrag_running; |
58176a96 | 1780 | char *name; |
0b86a832 CM |
1781 | |
1782 | /* the dirty list is only used by non-reference counted roots */ | |
1783 | struct list_head dirty_list; | |
7b128766 | 1784 | |
5d4f98a2 YZ |
1785 | struct list_head root_list; |
1786 | ||
2ab28f32 JB |
1787 | spinlock_t log_extents_lock[2]; |
1788 | struct list_head logged_list[2]; | |
1789 | ||
d68fc57b | 1790 | spinlock_t orphan_lock; |
8a35d95f | 1791 | atomic_t orphan_inodes; |
d68fc57b YZ |
1792 | struct btrfs_block_rsv *orphan_block_rsv; |
1793 | int orphan_item_inserted; | |
1794 | int orphan_cleanup_state; | |
3394e160 | 1795 | |
5d4f98a2 YZ |
1796 | spinlock_t inode_lock; |
1797 | /* red-black tree that keeps track of in-memory inodes */ | |
1798 | struct rb_root inode_tree; | |
1799 | ||
16cdcec7 MX |
1800 | /* |
1801 | * radix tree that keeps track of delayed nodes of every inode, | |
1802 | * protected by inode_lock | |
1803 | */ | |
1804 | struct radix_tree_root delayed_nodes_tree; | |
3394e160 CM |
1805 | /* |
1806 | * right now this just gets used so that a root has its own devid | |
1807 | * for stat. It may be used for more later | |
1808 | */ | |
0ee5dc67 | 1809 | dev_t anon_dev; |
f1ebcc74 LB |
1810 | |
1811 | int force_cow; | |
8ea05e3a | 1812 | |
5f3ab90a | 1813 | spinlock_t root_item_lock; |
b0feb9d9 | 1814 | atomic_t refs; |
eb73c1b7 | 1815 | |
573bfb72 | 1816 | struct mutex delalloc_mutex; |
eb73c1b7 MX |
1817 | spinlock_t delalloc_lock; |
1818 | /* | |
1819 | * all of the inodes that have delalloc bytes. It is possible for | |
1820 | * this list to be empty even when there is still dirty data=ordered | |
1821 | * extents waiting to finish IO. | |
1822 | */ | |
1823 | struct list_head delalloc_inodes; | |
1824 | struct list_head delalloc_root; | |
1825 | u64 nr_delalloc_inodes; | |
31f3d255 MX |
1826 | |
1827 | struct mutex ordered_extent_mutex; | |
199c2a9c MX |
1828 | /* |
1829 | * this is used by the balancing code to wait for all the pending | |
1830 | * ordered extents | |
1831 | */ | |
1832 | spinlock_t ordered_extent_lock; | |
1833 | ||
1834 | /* | |
1835 | * all of the data=ordered extents pending writeback | |
1836 | * these can span multiple transactions and basically include | |
1837 | * every dirty data page that isn't from nodatacow | |
1838 | */ | |
1839 | struct list_head ordered_extents; | |
1840 | struct list_head ordered_root; | |
1841 | u64 nr_ordered_extents; | |
2c686537 DS |
1842 | |
1843 | /* | |
1844 | * Number of currently running SEND ioctls to prevent | |
1845 | * manipulation with the read-only status via SUBVOL_SETFLAGS | |
1846 | */ | |
1847 | int send_in_progress; | |
8257b2dc MX |
1848 | struct btrfs_subvolume_writers *subv_writers; |
1849 | atomic_t will_be_snapshoted; | |
62e2749e CM |
1850 | }; |
1851 | ||
4cb5300b CM |
1852 | struct btrfs_ioctl_defrag_range_args { |
1853 | /* start of the defrag operation */ | |
1854 | __u64 start; | |
1855 | ||
1856 | /* number of bytes to defrag, use (u64)-1 to say all */ | |
1857 | __u64 len; | |
1858 | ||
1859 | /* | |
1860 | * flags for the operation, which can include turning | |
1861 | * on compression for this one defrag | |
1862 | */ | |
1863 | __u64 flags; | |
1864 | ||
1865 | /* | |
1866 | * any extent bigger than this will be considered | |
1867 | * already defragged. Use 0 to take the kernel default | |
1868 | * Use 1 to say every single extent must be rewritten | |
1869 | */ | |
1870 | __u32 extent_thresh; | |
1871 | ||
1872 | /* | |
1873 | * which compression method to use if turning on compression | |
1874 | * for this defrag operation. If unspecified, zlib will | |
1875 | * be used | |
1876 | */ | |
1877 | __u32 compress_type; | |
1878 | ||
1879 | /* spare for later */ | |
1880 | __u32 unused[4]; | |
1881 | }; | |
1882 | ||
1883 | ||
1e1d2701 CM |
1884 | /* |
1885 | * inode items have the data typically returned from stat and store other | |
1886 | * info about object characteristics. There is one for every file and dir in | |
1887 | * the FS | |
1888 | */ | |
9078a3e1 | 1889 | #define BTRFS_INODE_ITEM_KEY 1 |
0660b5af | 1890 | #define BTRFS_INODE_REF_KEY 12 |
f186373f | 1891 | #define BTRFS_INODE_EXTREF_KEY 13 |
0660b5af CM |
1892 | #define BTRFS_XATTR_ITEM_KEY 24 |
1893 | #define BTRFS_ORPHAN_ITEM_KEY 48 | |
9078a3e1 | 1894 | /* reserve 2-15 close to the inode for later flexibility */ |
1e1d2701 CM |
1895 | |
1896 | /* | |
1897 | * dir items are the name -> inode pointers in a directory. There is one | |
1898 | * for every name in a directory. | |
1899 | */ | |
0660b5af CM |
1900 | #define BTRFS_DIR_LOG_ITEM_KEY 60 |
1901 | #define BTRFS_DIR_LOG_INDEX_KEY 72 | |
1902 | #define BTRFS_DIR_ITEM_KEY 84 | |
1903 | #define BTRFS_DIR_INDEX_KEY 96 | |
1e1d2701 | 1904 | /* |
9078a3e1 | 1905 | * extent data is for file data |
1e1d2701 | 1906 | */ |
0660b5af | 1907 | #define BTRFS_EXTENT_DATA_KEY 108 |
d20f7043 | 1908 | |
f254e52c | 1909 | /* |
d20f7043 CM |
1910 | * extent csums are stored in a separate tree and hold csums for |
1911 | * an entire extent on disk. | |
f254e52c | 1912 | */ |
d20f7043 | 1913 | #define BTRFS_EXTENT_CSUM_KEY 128 |
f254e52c | 1914 | |
1e1d2701 | 1915 | /* |
d4a78947 | 1916 | * root items point to tree roots. They are typically in the root |
1e1d2701 CM |
1917 | * tree used by the super block to find all the other trees |
1918 | */ | |
0660b5af CM |
1919 | #define BTRFS_ROOT_ITEM_KEY 132 |
1920 | ||
1921 | /* | |
1922 | * root backrefs tie subvols and snapshots to the directory entries that | |
1923 | * reference them | |
1924 | */ | |
1925 | #define BTRFS_ROOT_BACKREF_KEY 144 | |
1926 | ||
1927 | /* | |
1928 | * root refs make a fast index for listing all of the snapshots and | |
1929 | * subvolumes referenced by a given root. They point directly to the | |
1930 | * directory item in the root that references the subvol | |
1931 | */ | |
1932 | #define BTRFS_ROOT_REF_KEY 156 | |
1933 | ||
1e1d2701 CM |
1934 | /* |
1935 | * extent items are in the extent map tree. These record which blocks | |
1936 | * are used, and how many references there are to each block | |
1937 | */ | |
0660b5af | 1938 | #define BTRFS_EXTENT_ITEM_KEY 168 |
5d4f98a2 | 1939 | |
3173a18f JB |
1940 | /* |
1941 | * The same as the BTRFS_EXTENT_ITEM_KEY, except it's metadata we already know | |
1942 | * the length, so we save the level in key->offset instead of the length. | |
1943 | */ | |
1944 | #define BTRFS_METADATA_ITEM_KEY 169 | |
1945 | ||
5d4f98a2 YZ |
1946 | #define BTRFS_TREE_BLOCK_REF_KEY 176 |
1947 | ||
1948 | #define BTRFS_EXTENT_DATA_REF_KEY 178 | |
1949 | ||
1950 | #define BTRFS_EXTENT_REF_V0_KEY 180 | |
1951 | ||
1952 | #define BTRFS_SHARED_BLOCK_REF_KEY 182 | |
1953 | ||
1954 | #define BTRFS_SHARED_DATA_REF_KEY 184 | |
9078a3e1 CM |
1955 | |
1956 | /* | |
1957 | * block groups give us hints into the extent allocation trees. Which | |
1958 | * blocks are free etc etc | |
1959 | */ | |
0660b5af | 1960 | #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 |
9f5fae2f | 1961 | |
0660b5af CM |
1962 | #define BTRFS_DEV_EXTENT_KEY 204 |
1963 | #define BTRFS_DEV_ITEM_KEY 216 | |
1964 | #define BTRFS_CHUNK_ITEM_KEY 228 | |
0b86a832 | 1965 | |
630dc772 AJ |
1966 | /* |
1967 | * Records the overall state of the qgroups. | |
1968 | * There's only one instance of this key present, | |
1969 | * (0, BTRFS_QGROUP_STATUS_KEY, 0) | |
1970 | */ | |
1971 | #define BTRFS_QGROUP_STATUS_KEY 240 | |
1972 | /* | |
1973 | * Records the currently used space of the qgroup. | |
1974 | * One key per qgroup, (0, BTRFS_QGROUP_INFO_KEY, qgroupid). | |
1975 | */ | |
1976 | #define BTRFS_QGROUP_INFO_KEY 242 | |
1977 | /* | |
1978 | * Contains the user configured limits for the qgroup. | |
1979 | * One key per qgroup, (0, BTRFS_QGROUP_LIMIT_KEY, qgroupid). | |
1980 | */ | |
1981 | #define BTRFS_QGROUP_LIMIT_KEY 244 | |
1982 | /* | |
1983 | * Records the child-parent relationship of qgroups. For | |
1984 | * each relation, 2 keys are present: | |
1985 | * (childid, BTRFS_QGROUP_RELATION_KEY, parentid) | |
1986 | * (parentid, BTRFS_QGROUP_RELATION_KEY, childid) | |
1987 | */ | |
1988 | #define BTRFS_QGROUP_RELATION_KEY 246 | |
1989 | ||
0940ebf6 ID |
1990 | #define BTRFS_BALANCE_ITEM_KEY 248 |
1991 | ||
733f4fbb SB |
1992 | /* |
1993 | * Persistantly stores the io stats in the device tree. | |
1994 | * One key for all stats, (0, BTRFS_DEV_STATS_KEY, devid). | |
1995 | */ | |
1996 | #define BTRFS_DEV_STATS_KEY 249 | |
1997 | ||
a2bff640 SB |
1998 | /* |
1999 | * Persistantly stores the device replace state in the device tree. | |
2000 | * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0). | |
2001 | */ | |
2002 | #define BTRFS_DEV_REPLACE_KEY 250 | |
2003 | ||
07b30a49 SB |
2004 | /* |
2005 | * Stores items that allow to quickly map UUIDs to something else. | |
2006 | * These items are part of the filesystem UUID tree. | |
2007 | * The key is built like this: | |
2008 | * (UUID_upper_64_bits, BTRFS_UUID_KEY*, UUID_lower_64_bits). | |
2009 | */ | |
2010 | #if BTRFS_UUID_SIZE != 16 | |
2011 | #error "UUID items require BTRFS_UUID_SIZE == 16!" | |
2012 | #endif | |
2013 | #define BTRFS_UUID_KEY_SUBVOL 251 /* for UUIDs assigned to subvols */ | |
2014 | #define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 /* for UUIDs assigned to | |
2015 | * received subvols */ | |
2016 | ||
1e1d2701 CM |
2017 | /* |
2018 | * string items are for debugging. They just store a short string of | |
2019 | * data in the FS | |
2020 | */ | |
9078a3e1 CM |
2021 | #define BTRFS_STRING_ITEM_KEY 253 |
2022 | ||
0942caa3 DS |
2023 | /* |
2024 | * Flags for mount options. | |
2025 | * | |
2026 | * Note: don't forget to add new options to btrfs_show_options() | |
2027 | */ | |
21ad10cf CM |
2028 | #define BTRFS_MOUNT_NODATASUM (1 << 0) |
2029 | #define BTRFS_MOUNT_NODATACOW (1 << 1) | |
2030 | #define BTRFS_MOUNT_NOBARRIER (1 << 2) | |
e18e4809 | 2031 | #define BTRFS_MOUNT_SSD (1 << 3) |
dfe25020 | 2032 | #define BTRFS_MOUNT_DEGRADED (1 << 4) |
c8b97818 | 2033 | #define BTRFS_MOUNT_COMPRESS (1 << 5) |
3a5e1404 | 2034 | #define BTRFS_MOUNT_NOTREELOG (1 << 6) |
dccae999 | 2035 | #define BTRFS_MOUNT_FLUSHONCOMMIT (1 << 7) |
451d7585 | 2036 | #define BTRFS_MOUNT_SSD_SPREAD (1 << 8) |
c289811c | 2037 | #define BTRFS_MOUNT_NOSSD (1 << 9) |
e244a0ae | 2038 | #define BTRFS_MOUNT_DISCARD (1 << 10) |
a555f810 | 2039 | #define BTRFS_MOUNT_FORCE_COMPRESS (1 << 11) |
0af3d00b | 2040 | #define BTRFS_MOUNT_SPACE_CACHE (1 << 12) |
88c2ba3b | 2041 | #define BTRFS_MOUNT_CLEAR_CACHE (1 << 13) |
4260f7c7 | 2042 | #define BTRFS_MOUNT_USER_SUBVOL_RM_ALLOWED (1 << 14) |
91435650 | 2043 | #define BTRFS_MOUNT_ENOSPC_DEBUG (1 << 15) |
4cb5300b | 2044 | #define BTRFS_MOUNT_AUTO_DEFRAG (1 << 16) |
4b9465cb | 2045 | #define BTRFS_MOUNT_INODE_MAP_CACHE (1 << 17) |
af31f5e5 | 2046 | #define BTRFS_MOUNT_RECOVERY (1 << 18) |
9555c6c1 | 2047 | #define BTRFS_MOUNT_SKIP_BALANCE (1 << 19) |
c126dea7 CM |
2048 | #define BTRFS_MOUNT_CHECK_INTEGRITY (1 << 20) |
2049 | #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) | |
8c342930 | 2050 | #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) |
f420ee1e | 2051 | #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) |
3818aea2 | 2052 | #define BTRFS_MOUNT_CHANGE_INODE_CACHE (1 << 24) |
b6cda9bc | 2053 | |
8b87dc17 DS |
2054 | #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) |
2055 | ||
b6cda9bc CM |
2056 | #define btrfs_clear_opt(o, opt) ((o) &= ~BTRFS_MOUNT_##opt) |
2057 | #define btrfs_set_opt(o, opt) ((o) |= BTRFS_MOUNT_##opt) | |
dc81cdc5 | 2058 | #define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt) |
b6cda9bc CM |
2059 | #define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \ |
2060 | BTRFS_MOUNT_##opt) | |
9d89ce65 WS |
2061 | #define btrfs_set_and_info(root, opt, fmt, args...) \ |
2062 | { \ | |
2063 | if (!btrfs_test_opt(root, opt)) \ | |
2064 | btrfs_info(root->fs_info, fmt, ##args); \ | |
2065 | btrfs_set_opt(root->fs_info->mount_opt, opt); \ | |
2066 | } | |
2067 | ||
2068 | #define btrfs_clear_and_info(root, opt, fmt, args...) \ | |
2069 | { \ | |
2070 | if (btrfs_test_opt(root, opt)) \ | |
2071 | btrfs_info(root->fs_info, fmt, ##args); \ | |
2072 | btrfs_clear_opt(root->fs_info->mount_opt, opt); \ | |
2073 | } | |
2074 | ||
b98b6767 Y |
2075 | /* |
2076 | * Inode flags | |
2077 | */ | |
fdebe2bd Y |
2078 | #define BTRFS_INODE_NODATASUM (1 << 0) |
2079 | #define BTRFS_INODE_NODATACOW (1 << 1) | |
2080 | #define BTRFS_INODE_READONLY (1 << 2) | |
c8b97818 | 2081 | #define BTRFS_INODE_NOCOMPRESS (1 << 3) |
d899e052 | 2082 | #define BTRFS_INODE_PREALLOC (1 << 4) |
6cbff00f CH |
2083 | #define BTRFS_INODE_SYNC (1 << 5) |
2084 | #define BTRFS_INODE_IMMUTABLE (1 << 6) | |
2085 | #define BTRFS_INODE_APPEND (1 << 7) | |
2086 | #define BTRFS_INODE_NODUMP (1 << 8) | |
2087 | #define BTRFS_INODE_NOATIME (1 << 9) | |
2088 | #define BTRFS_INODE_DIRSYNC (1 << 10) | |
75e7cb7f | 2089 | #define BTRFS_INODE_COMPRESS (1 << 11) |
6cbff00f | 2090 | |
08fe4db1 LZ |
2091 | #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) |
2092 | ||
cfed81a0 CM |
2093 | struct btrfs_map_token { |
2094 | struct extent_buffer *eb; | |
2095 | char *kaddr; | |
2096 | unsigned long offset; | |
2097 | }; | |
2098 | ||
2099 | static inline void btrfs_init_map_token (struct btrfs_map_token *token) | |
2100 | { | |
ad914559 | 2101 | token->kaddr = NULL; |
cfed81a0 CM |
2102 | } |
2103 | ||
5f39d397 CM |
2104 | /* some macros to generate set/get funcs for the struct fields. This |
2105 | * assumes there is a lefoo_to_cpu for every type, so lets make a simple | |
2106 | * one for u8: | |
2107 | */ | |
2108 | #define le8_to_cpu(v) (v) | |
2109 | #define cpu_to_le8(v) (v) | |
2110 | #define __le8 u8 | |
2111 | ||
2112 | #define read_eb_member(eb, ptr, type, member, result) ( \ | |
2113 | read_extent_buffer(eb, (char *)(result), \ | |
2114 | ((unsigned long)(ptr)) + \ | |
2115 | offsetof(type, member), \ | |
2116 | sizeof(((type *)0)->member))) | |
2117 | ||
2118 | #define write_eb_member(eb, ptr, type, member, result) ( \ | |
2119 | write_extent_buffer(eb, (char *)(result), \ | |
2120 | ((unsigned long)(ptr)) + \ | |
2121 | offsetof(type, member), \ | |
2122 | sizeof(((type *)0)->member))) | |
2123 | ||
18077bb4 LZ |
2124 | #define DECLARE_BTRFS_SETGET_BITS(bits) \ |
2125 | u##bits btrfs_get_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
2126 | unsigned long off, \ | |
2127 | struct btrfs_map_token *token); \ | |
2128 | void btrfs_set_token_##bits(struct extent_buffer *eb, void *ptr, \ | |
2129 | unsigned long off, u##bits val, \ | |
2130 | struct btrfs_map_token *token); \ | |
2131 | static inline u##bits btrfs_get_##bits(struct extent_buffer *eb, void *ptr, \ | |
2132 | unsigned long off) \ | |
2133 | { \ | |
2134 | return btrfs_get_token_##bits(eb, ptr, off, NULL); \ | |
2135 | } \ | |
2136 | static inline void btrfs_set_##bits(struct extent_buffer *eb, void *ptr, \ | |
2137 | unsigned long off, u##bits val) \ | |
2138 | { \ | |
2139 | btrfs_set_token_##bits(eb, ptr, off, val, NULL); \ | |
2140 | } | |
2141 | ||
2142 | DECLARE_BTRFS_SETGET_BITS(8) | |
2143 | DECLARE_BTRFS_SETGET_BITS(16) | |
2144 | DECLARE_BTRFS_SETGET_BITS(32) | |
2145 | DECLARE_BTRFS_SETGET_BITS(64) | |
2146 | ||
5f39d397 | 2147 | #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ |
18077bb4 LZ |
2148 | static inline u##bits btrfs_##name(struct extent_buffer *eb, type *s) \ |
2149 | { \ | |
2150 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2151 | return btrfs_get_##bits(eb, s, offsetof(type, member)); \ | |
2152 | } \ | |
2153 | static inline void btrfs_set_##name(struct extent_buffer *eb, type *s, \ | |
2154 | u##bits val) \ | |
2155 | { \ | |
2156 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2157 | btrfs_set_##bits(eb, s, offsetof(type, member), val); \ | |
2158 | } \ | |
2159 | static inline u##bits btrfs_token_##name(struct extent_buffer *eb, type *s, \ | |
2160 | struct btrfs_map_token *token) \ | |
2161 | { \ | |
2162 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2163 | return btrfs_get_token_##bits(eb, s, offsetof(type, member), token); \ | |
2164 | } \ | |
2165 | static inline void btrfs_set_token_##name(struct extent_buffer *eb, \ | |
2166 | type *s, u##bits val, \ | |
2167 | struct btrfs_map_token *token) \ | |
2168 | { \ | |
2169 | BUILD_BUG_ON(sizeof(u##bits) != sizeof(((type *)0))->member); \ | |
2170 | btrfs_set_token_##bits(eb, s, offsetof(type, member), val, token); \ | |
2171 | } | |
5f39d397 CM |
2172 | |
2173 | #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ | |
2174 | static inline u##bits btrfs_##name(struct extent_buffer *eb) \ | |
2175 | { \ | |
727011e0 | 2176 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 2177 | u##bits res = le##bits##_to_cpu(p->member); \ |
810191ff | 2178 | return res; \ |
5f39d397 CM |
2179 | } \ |
2180 | static inline void btrfs_set_##name(struct extent_buffer *eb, \ | |
2181 | u##bits val) \ | |
2182 | { \ | |
727011e0 | 2183 | type *p = page_address(eb->pages[0]); \ |
df68b8a7 | 2184 | p->member = cpu_to_le##bits(val); \ |
5f39d397 | 2185 | } |
9078a3e1 | 2186 | |
5f39d397 CM |
2187 | #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ |
2188 | static inline u##bits btrfs_##name(type *s) \ | |
2189 | { \ | |
2190 | return le##bits##_to_cpu(s->member); \ | |
2191 | } \ | |
2192 | static inline void btrfs_set_##name(type *s, u##bits val) \ | |
2193 | { \ | |
2194 | s->member = cpu_to_le##bits(val); \ | |
1e1d2701 CM |
2195 | } |
2196 | ||
0b86a832 CM |
2197 | BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64); |
2198 | BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64); | |
2199 | BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64); | |
2200 | BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32); | |
2201 | BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32); | |
c3027eb5 CM |
2202 | BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item, |
2203 | start_offset, 64); | |
0b86a832 CM |
2204 | BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32); |
2205 | BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
2206 | BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32); |
2207 | BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8); | |
2208 | BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8); | |
2b82032c | 2209 | BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64); |
0b86a832 | 2210 | |
8a4b83cc CM |
2211 | BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64); |
2212 | BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item, | |
2213 | total_bytes, 64); | |
2214 | BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item, | |
2215 | bytes_used, 64); | |
2216 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item, | |
2217 | io_align, 32); | |
2218 | BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item, | |
2219 | io_width, 32); | |
2220 | BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item, | |
2221 | sector_size, 32); | |
2222 | BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64); | |
e17cade2 CM |
2223 | BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item, |
2224 | dev_group, 32); | |
2225 | BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item, | |
2226 | seek_speed, 8); | |
2227 | BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item, | |
2228 | bandwidth, 8); | |
2b82032c YZ |
2229 | BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item, |
2230 | generation, 64); | |
8a4b83cc | 2231 | |
410ba3a2 | 2232 | static inline unsigned long btrfs_device_uuid(struct btrfs_dev_item *d) |
0b86a832 | 2233 | { |
410ba3a2 | 2234 | return (unsigned long)d + offsetof(struct btrfs_dev_item, uuid); |
0b86a832 CM |
2235 | } |
2236 | ||
1473b24e | 2237 | static inline unsigned long btrfs_device_fsid(struct btrfs_dev_item *d) |
2b82032c | 2238 | { |
1473b24e | 2239 | return (unsigned long)d + offsetof(struct btrfs_dev_item, fsid); |
2b82032c YZ |
2240 | } |
2241 | ||
e17cade2 | 2242 | BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64); |
0b86a832 CM |
2243 | BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64); |
2244 | BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64); | |
2245 | BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32); | |
2246 | BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32); | |
2247 | BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32); | |
2248 | BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64); | |
2249 | BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16); | |
321aecc6 | 2250 | BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16); |
0b86a832 CM |
2251 | BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64); |
2252 | BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64); | |
2253 | ||
e17cade2 CM |
2254 | static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s) |
2255 | { | |
2256 | return (char *)s + offsetof(struct btrfs_stripe, dev_uuid); | |
2257 | } | |
2258 | ||
2259 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64); | |
0b86a832 CM |
2260 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64); |
2261 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk, | |
2262 | stripe_len, 64); | |
2263 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk, | |
2264 | io_align, 32); | |
2265 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk, | |
2266 | io_width, 32); | |
2267 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk, | |
2268 | sector_size, 32); | |
2269 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64); | |
2270 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk, | |
2271 | num_stripes, 16); | |
321aecc6 CM |
2272 | BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk, |
2273 | sub_stripes, 16); | |
0b86a832 CM |
2274 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64); |
2275 | BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64); | |
2276 | ||
2277 | static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c, | |
2278 | int nr) | |
2279 | { | |
2280 | unsigned long offset = (unsigned long)c; | |
2281 | offset += offsetof(struct btrfs_chunk, stripe); | |
2282 | offset += nr * sizeof(struct btrfs_stripe); | |
2283 | return (struct btrfs_stripe *)offset; | |
2284 | } | |
2285 | ||
a443755f CM |
2286 | static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr) |
2287 | { | |
2288 | return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr)); | |
2289 | } | |
2290 | ||
0b86a832 CM |
2291 | static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb, |
2292 | struct btrfs_chunk *c, int nr) | |
2293 | { | |
2294 | return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr)); | |
2295 | } | |
2296 | ||
0b86a832 CM |
2297 | static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb, |
2298 | struct btrfs_chunk *c, int nr) | |
2299 | { | |
2300 | return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr)); | |
2301 | } | |
2302 | ||
5f39d397 CM |
2303 | /* struct btrfs_block_group_item */ |
2304 | BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item, | |
2305 | used, 64); | |
2306 | BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item, | |
2307 | used, 64); | |
0b86a832 CM |
2308 | BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid, |
2309 | struct btrfs_block_group_item, chunk_objectid, 64); | |
e17cade2 CM |
2310 | |
2311 | BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid, | |
0b86a832 CM |
2312 | struct btrfs_block_group_item, chunk_objectid, 64); |
2313 | BTRFS_SETGET_FUNCS(disk_block_group_flags, | |
2314 | struct btrfs_block_group_item, flags, 64); | |
2315 | BTRFS_SETGET_STACK_FUNCS(block_group_flags, | |
2316 | struct btrfs_block_group_item, flags, 64); | |
1e1d2701 | 2317 | |
3954401f CM |
2318 | /* struct btrfs_inode_ref */ |
2319 | BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); | |
aec7477b | 2320 | BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); |
3954401f | 2321 | |
f186373f MF |
2322 | /* struct btrfs_inode_extref */ |
2323 | BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, | |
2324 | parent_objectid, 64); | |
2325 | BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, | |
2326 | name_len, 16); | |
2327 | BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); | |
2328 | ||
5f39d397 CM |
2329 | /* struct btrfs_inode_item */ |
2330 | BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); | |
c3027eb5 | 2331 | BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); |
e02119d5 | 2332 | BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64); |
5f39d397 | 2333 | BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64); |
a76a3cd4 | 2334 | BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64); |
5f39d397 CM |
2335 | BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64); |
2336 | BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32); | |
2337 | BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32); | |
2338 | BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32); | |
2339 | BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32); | |
0b86a832 | 2340 | BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64); |
f2b636e8 | 2341 | BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); |
3cae210f QW |
2342 | BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, |
2343 | generation, 64); | |
2344 | BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, struct btrfs_inode_item, | |
2345 | sequence, 64); | |
2346 | BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, struct btrfs_inode_item, | |
2347 | transid, 64); | |
2348 | BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); | |
2349 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, struct btrfs_inode_item, | |
2350 | nbytes, 64); | |
2351 | BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group, struct btrfs_inode_item, | |
2352 | block_group, 64); | |
2353 | BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink, struct btrfs_inode_item, nlink, 32); | |
2354 | BTRFS_SETGET_STACK_FUNCS(stack_inode_uid, struct btrfs_inode_item, uid, 32); | |
2355 | BTRFS_SETGET_STACK_FUNCS(stack_inode_gid, struct btrfs_inode_item, gid, 32); | |
2356 | BTRFS_SETGET_STACK_FUNCS(stack_inode_mode, struct btrfs_inode_item, mode, 32); | |
2357 | BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev, struct btrfs_inode_item, rdev, 64); | |
2358 | BTRFS_SETGET_STACK_FUNCS(stack_inode_flags, struct btrfs_inode_item, flags, 64); | |
1e1d2701 | 2359 | |
0b86a832 | 2360 | static inline struct btrfs_timespec * |
5f39d397 | 2361 | btrfs_inode_atime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2362 | { |
5f39d397 CM |
2363 | unsigned long ptr = (unsigned long)inode_item; |
2364 | ptr += offsetof(struct btrfs_inode_item, atime); | |
0b86a832 | 2365 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2366 | } |
2367 | ||
0b86a832 | 2368 | static inline struct btrfs_timespec * |
5f39d397 | 2369 | btrfs_inode_mtime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2370 | { |
5f39d397 CM |
2371 | unsigned long ptr = (unsigned long)inode_item; |
2372 | ptr += offsetof(struct btrfs_inode_item, mtime); | |
0b86a832 | 2373 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2374 | } |
2375 | ||
0b86a832 | 2376 | static inline struct btrfs_timespec * |
5f39d397 | 2377 | btrfs_inode_ctime(struct btrfs_inode_item *inode_item) |
1e1d2701 | 2378 | { |
5f39d397 CM |
2379 | unsigned long ptr = (unsigned long)inode_item; |
2380 | ptr += offsetof(struct btrfs_inode_item, ctime); | |
0b86a832 | 2381 | return (struct btrfs_timespec *)ptr; |
1e1d2701 CM |
2382 | } |
2383 | ||
0b86a832 CM |
2384 | BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64); |
2385 | BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32); | |
3cae210f QW |
2386 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec, sec, 64); |
2387 | BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec, nsec, 32); | |
e20d96d6 | 2388 | |
0b86a832 | 2389 | /* struct btrfs_dev_extent */ |
e17cade2 CM |
2390 | BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent, |
2391 | chunk_tree, 64); | |
2392 | BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent, | |
2393 | chunk_objectid, 64); | |
2394 | BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent, | |
2395 | chunk_offset, 64); | |
0b86a832 CM |
2396 | BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64); |
2397 | ||
231e88f4 | 2398 | static inline unsigned long btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) |
e17cade2 CM |
2399 | { |
2400 | unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid); | |
231e88f4 | 2401 | return (unsigned long)dev + ptr; |
e17cade2 CM |
2402 | } |
2403 | ||
5d4f98a2 YZ |
2404 | BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64); |
2405 | BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item, | |
2406 | generation, 64); | |
2407 | BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64); | |
74493f7a | 2408 | |
5d4f98a2 YZ |
2409 | BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32); |
2410 | ||
2411 | ||
2412 | BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8); | |
2413 | ||
2414 | static inline void btrfs_tree_block_key(struct extent_buffer *eb, | |
2415 | struct btrfs_tree_block_info *item, | |
2416 | struct btrfs_disk_key *key) | |
2417 | { | |
2418 | read_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2419 | } | |
2420 | ||
2421 | static inline void btrfs_set_tree_block_key(struct extent_buffer *eb, | |
2422 | struct btrfs_tree_block_info *item, | |
2423 | struct btrfs_disk_key *key) | |
2424 | { | |
2425 | write_eb_member(eb, item, struct btrfs_tree_block_info, key, key); | |
2426 | } | |
e20d96d6 | 2427 | |
5d4f98a2 YZ |
2428 | BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref, |
2429 | root, 64); | |
2430 | BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref, | |
2431 | objectid, 64); | |
2432 | BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref, | |
2433 | offset, 64); | |
2434 | BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref, | |
2435 | count, 32); | |
2436 | ||
2437 | BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref, | |
2438 | count, 32); | |
2439 | ||
2440 | BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref, | |
2441 | type, 8); | |
2442 | BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref, | |
2443 | offset, 64); | |
2444 | ||
2445 | static inline u32 btrfs_extent_inline_ref_size(int type) | |
2446 | { | |
2447 | if (type == BTRFS_TREE_BLOCK_REF_KEY || | |
2448 | type == BTRFS_SHARED_BLOCK_REF_KEY) | |
2449 | return sizeof(struct btrfs_extent_inline_ref); | |
2450 | if (type == BTRFS_SHARED_DATA_REF_KEY) | |
2451 | return sizeof(struct btrfs_shared_data_ref) + | |
2452 | sizeof(struct btrfs_extent_inline_ref); | |
2453 | if (type == BTRFS_EXTENT_DATA_REF_KEY) | |
2454 | return sizeof(struct btrfs_extent_data_ref) + | |
2455 | offsetof(struct btrfs_extent_inline_ref, offset); | |
2456 | BUG(); | |
2457 | return 0; | |
2458 | } | |
2459 | ||
2460 | BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64); | |
2461 | BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0, | |
2462 | generation, 64); | |
2463 | BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64); | |
2464 | BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32); | |
e20d96d6 | 2465 | |
5f39d397 CM |
2466 | /* struct btrfs_node */ |
2467 | BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64); | |
74493f7a | 2468 | BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64); |
3cae210f QW |
2469 | BTRFS_SETGET_STACK_FUNCS(stack_key_blockptr, struct btrfs_key_ptr, |
2470 | blockptr, 64); | |
2471 | BTRFS_SETGET_STACK_FUNCS(stack_key_generation, struct btrfs_key_ptr, | |
2472 | generation, 64); | |
e20d96d6 | 2473 | |
5f39d397 | 2474 | static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr) |
cf27e1ee | 2475 | { |
5f39d397 CM |
2476 | unsigned long ptr; |
2477 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2478 | sizeof(struct btrfs_key_ptr) * nr; | |
2479 | return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr); | |
cf27e1ee CM |
2480 | } |
2481 | ||
5f39d397 CM |
2482 | static inline void btrfs_set_node_blockptr(struct extent_buffer *eb, |
2483 | int nr, u64 val) | |
cf27e1ee | 2484 | { |
5f39d397 CM |
2485 | unsigned long ptr; |
2486 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2487 | sizeof(struct btrfs_key_ptr) * nr; | |
2488 | btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val); | |
cf27e1ee CM |
2489 | } |
2490 | ||
74493f7a CM |
2491 | static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr) |
2492 | { | |
2493 | unsigned long ptr; | |
2494 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2495 | sizeof(struct btrfs_key_ptr) * nr; | |
2496 | return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr); | |
2497 | } | |
2498 | ||
2499 | static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb, | |
2500 | int nr, u64 val) | |
2501 | { | |
2502 | unsigned long ptr; | |
2503 | ptr = offsetof(struct btrfs_node, ptrs) + | |
2504 | sizeof(struct btrfs_key_ptr) * nr; | |
2505 | btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val); | |
2506 | } | |
2507 | ||
810191ff | 2508 | static inline unsigned long btrfs_node_key_ptr_offset(int nr) |
4d775673 | 2509 | { |
5f39d397 CM |
2510 | return offsetof(struct btrfs_node, ptrs) + |
2511 | sizeof(struct btrfs_key_ptr) * nr; | |
4d775673 CM |
2512 | } |
2513 | ||
e644d021 CM |
2514 | void btrfs_node_key(struct extent_buffer *eb, |
2515 | struct btrfs_disk_key *disk_key, int nr); | |
2516 | ||
5f39d397 CM |
2517 | static inline void btrfs_set_node_key(struct extent_buffer *eb, |
2518 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f8a0c | 2519 | { |
5f39d397 CM |
2520 | unsigned long ptr; |
2521 | ptr = btrfs_node_key_ptr_offset(nr); | |
2522 | write_eb_member(eb, (struct btrfs_key_ptr *)ptr, | |
2523 | struct btrfs_key_ptr, key, disk_key); | |
1d4f8a0c CM |
2524 | } |
2525 | ||
5f39d397 CM |
2526 | /* struct btrfs_item */ |
2527 | BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32); | |
2528 | BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32); | |
3cae210f QW |
2529 | BTRFS_SETGET_STACK_FUNCS(stack_item_offset, struct btrfs_item, offset, 32); |
2530 | BTRFS_SETGET_STACK_FUNCS(stack_item_size, struct btrfs_item, size, 32); | |
4d775673 | 2531 | |
5f39d397 | 2532 | static inline unsigned long btrfs_item_nr_offset(int nr) |
1d4f8a0c | 2533 | { |
5f39d397 CM |
2534 | return offsetof(struct btrfs_leaf, items) + |
2535 | sizeof(struct btrfs_item) * nr; | |
1d4f8a0c CM |
2536 | } |
2537 | ||
dd3cc16b | 2538 | static inline struct btrfs_item *btrfs_item_nr(int nr) |
0783fcfc | 2539 | { |
5f39d397 | 2540 | return (struct btrfs_item *)btrfs_item_nr_offset(nr); |
0783fcfc CM |
2541 | } |
2542 | ||
5f39d397 CM |
2543 | static inline u32 btrfs_item_end(struct extent_buffer *eb, |
2544 | struct btrfs_item *item) | |
0783fcfc | 2545 | { |
5f39d397 | 2546 | return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item); |
0783fcfc CM |
2547 | } |
2548 | ||
5f39d397 | 2549 | static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2550 | { |
dd3cc16b | 2551 | return btrfs_item_end(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2552 | } |
2553 | ||
5f39d397 | 2554 | static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2555 | { |
dd3cc16b | 2556 | return btrfs_item_offset(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2557 | } |
2558 | ||
5f39d397 | 2559 | static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr) |
0783fcfc | 2560 | { |
dd3cc16b | 2561 | return btrfs_item_size(eb, btrfs_item_nr(nr)); |
0783fcfc CM |
2562 | } |
2563 | ||
5f39d397 CM |
2564 | static inline void btrfs_item_key(struct extent_buffer *eb, |
2565 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2566 | { |
dd3cc16b | 2567 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 2568 | read_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
2569 | } |
2570 | ||
5f39d397 CM |
2571 | static inline void btrfs_set_item_key(struct extent_buffer *eb, |
2572 | struct btrfs_disk_key *disk_key, int nr) | |
1d4f6404 | 2573 | { |
dd3cc16b | 2574 | struct btrfs_item *item = btrfs_item_nr(nr); |
5f39d397 | 2575 | write_eb_member(eb, item, struct btrfs_item, key, disk_key); |
1d4f6404 CM |
2576 | } |
2577 | ||
e02119d5 CM |
2578 | BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64); |
2579 | ||
0660b5af CM |
2580 | /* |
2581 | * struct btrfs_root_ref | |
2582 | */ | |
2583 | BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64); | |
2584 | BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64); | |
2585 | BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16); | |
2586 | ||
5f39d397 | 2587 | /* struct btrfs_dir_item */ |
5103e947 | 2588 | BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16); |
5f39d397 CM |
2589 | BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8); |
2590 | BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16); | |
e02119d5 | 2591 | BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64); |
3cae210f QW |
2592 | BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8); |
2593 | BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, | |
2594 | data_len, 16); | |
2595 | BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, | |
2596 | name_len, 16); | |
2597 | BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, | |
2598 | transid, 64); | |
1d4f6404 | 2599 | |
5f39d397 CM |
2600 | static inline void btrfs_dir_item_key(struct extent_buffer *eb, |
2601 | struct btrfs_dir_item *item, | |
2602 | struct btrfs_disk_key *key) | |
1d4f6404 | 2603 | { |
5f39d397 | 2604 | read_eb_member(eb, item, struct btrfs_dir_item, location, key); |
1d4f6404 CM |
2605 | } |
2606 | ||
5f39d397 CM |
2607 | static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, |
2608 | struct btrfs_dir_item *item, | |
2609 | struct btrfs_disk_key *key) | |
a8a2ee0c | 2610 | { |
5f39d397 | 2611 | write_eb_member(eb, item, struct btrfs_dir_item, location, key); |
a8a2ee0c CM |
2612 | } |
2613 | ||
0af3d00b JB |
2614 | BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header, |
2615 | num_entries, 64); | |
2616 | BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header, | |
2617 | num_bitmaps, 64); | |
2618 | BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header, | |
2619 | generation, 64); | |
2620 | ||
2621 | static inline void btrfs_free_space_key(struct extent_buffer *eb, | |
2622 | struct btrfs_free_space_header *h, | |
2623 | struct btrfs_disk_key *key) | |
2624 | { | |
2625 | read_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2626 | } | |
2627 | ||
2628 | static inline void btrfs_set_free_space_key(struct extent_buffer *eb, | |
2629 | struct btrfs_free_space_header *h, | |
2630 | struct btrfs_disk_key *key) | |
2631 | { | |
2632 | write_eb_member(eb, h, struct btrfs_free_space_header, location, key); | |
2633 | } | |
2634 | ||
5f39d397 CM |
2635 | /* struct btrfs_disk_key */ |
2636 | BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key, | |
2637 | objectid, 64); | |
2638 | BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64); | |
2639 | BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8); | |
1d4f6404 | 2640 | |
e2fa7227 CM |
2641 | static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu, |
2642 | struct btrfs_disk_key *disk) | |
2643 | { | |
2644 | cpu->offset = le64_to_cpu(disk->offset); | |
5f39d397 | 2645 | cpu->type = disk->type; |
e2fa7227 CM |
2646 | cpu->objectid = le64_to_cpu(disk->objectid); |
2647 | } | |
2648 | ||
2649 | static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk, | |
2650 | struct btrfs_key *cpu) | |
2651 | { | |
2652 | disk->offset = cpu_to_le64(cpu->offset); | |
5f39d397 | 2653 | disk->type = cpu->type; |
e2fa7227 CM |
2654 | disk->objectid = cpu_to_le64(cpu->objectid); |
2655 | } | |
2656 | ||
5f39d397 CM |
2657 | static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb, |
2658 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2659 | { |
5f39d397 CM |
2660 | struct btrfs_disk_key disk_key; |
2661 | btrfs_node_key(eb, &disk_key, nr); | |
2662 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2663 | } |
2664 | ||
5f39d397 CM |
2665 | static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb, |
2666 | struct btrfs_key *key, int nr) | |
7f5c1516 | 2667 | { |
5f39d397 CM |
2668 | struct btrfs_disk_key disk_key; |
2669 | btrfs_item_key(eb, &disk_key, nr); | |
2670 | btrfs_disk_key_to_cpu(key, &disk_key); | |
7f5c1516 CM |
2671 | } |
2672 | ||
5f39d397 CM |
2673 | static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, |
2674 | struct btrfs_dir_item *item, | |
2675 | struct btrfs_key *key) | |
4d775673 | 2676 | { |
5f39d397 CM |
2677 | struct btrfs_disk_key disk_key; |
2678 | btrfs_dir_item_key(eb, item, &disk_key); | |
2679 | btrfs_disk_key_to_cpu(key, &disk_key); | |
4d775673 CM |
2680 | } |
2681 | ||
58176a96 | 2682 | |
5f39d397 | 2683 | static inline u8 btrfs_key_type(struct btrfs_key *key) |
3768f368 | 2684 | { |
5f39d397 | 2685 | return key->type; |
3768f368 CM |
2686 | } |
2687 | ||
5f39d397 | 2688 | static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) |
3768f368 | 2689 | { |
5f39d397 | 2690 | key->type = val; |
3768f368 CM |
2691 | } |
2692 | ||
5f39d397 | 2693 | /* struct btrfs_header */ |
db94535d | 2694 | BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); |
5f39d397 CM |
2695 | BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, |
2696 | generation, 64); | |
2697 | BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64); | |
2698 | BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32); | |
63b10fc4 | 2699 | BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64); |
5f39d397 | 2700 | BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8); |
3cae210f QW |
2701 | BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header, |
2702 | generation, 64); | |
2703 | BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64); | |
2704 | BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, | |
2705 | nritems, 32); | |
2706 | BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64); | |
0f7d52f4 | 2707 | |
63b10fc4 CM |
2708 | static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag) |
2709 | { | |
2710 | return (btrfs_header_flags(eb) & flag) == flag; | |
2711 | } | |
2712 | ||
2713 | static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag) | |
2714 | { | |
2715 | u64 flags = btrfs_header_flags(eb); | |
2716 | btrfs_set_header_flags(eb, flags | flag); | |
2717 | return (flags & flag) == flag; | |
2718 | } | |
2719 | ||
2720 | static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag) | |
2721 | { | |
2722 | u64 flags = btrfs_header_flags(eb); | |
2723 | btrfs_set_header_flags(eb, flags & ~flag); | |
2724 | return (flags & flag) == flag; | |
2725 | } | |
2726 | ||
5d4f98a2 YZ |
2727 | static inline int btrfs_header_backref_rev(struct extent_buffer *eb) |
2728 | { | |
2729 | u64 flags = btrfs_header_flags(eb); | |
2730 | return flags >> BTRFS_BACKREF_REV_SHIFT; | |
2731 | } | |
2732 | ||
2733 | static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, | |
2734 | int rev) | |
2735 | { | |
2736 | u64 flags = btrfs_header_flags(eb); | |
2737 | flags &= ~BTRFS_BACKREF_REV_MASK; | |
2738 | flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT; | |
2739 | btrfs_set_header_flags(eb, flags); | |
2740 | } | |
2741 | ||
0a4e5586 | 2742 | static inline unsigned long btrfs_header_fsid(void) |
0f7d52f4 | 2743 | { |
fba6aa75 | 2744 | return offsetof(struct btrfs_header, fsid); |
0f7d52f4 CM |
2745 | } |
2746 | ||
b308bc2f | 2747 | static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) |
e17cade2 | 2748 | { |
b308bc2f | 2749 | return offsetof(struct btrfs_header, chunk_tree_uuid); |
e17cade2 CM |
2750 | } |
2751 | ||
5f39d397 | 2752 | static inline int btrfs_is_leaf(struct extent_buffer *eb) |
3768f368 | 2753 | { |
d397712b | 2754 | return btrfs_header_level(eb) == 0; |
3768f368 CM |
2755 | } |
2756 | ||
5f39d397 | 2757 | /* struct btrfs_root_item */ |
84234f3a YZ |
2758 | BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item, |
2759 | generation, 64); | |
5f39d397 | 2760 | BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32); |
db94535d CM |
2761 | BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64); |
2762 | BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8); | |
3768f368 | 2763 | |
84234f3a YZ |
2764 | BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item, |
2765 | generation, 64); | |
db94535d CM |
2766 | BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64); |
2767 | BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8); | |
5f39d397 CM |
2768 | BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64); |
2769 | BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32); | |
f2b636e8 | 2770 | BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64); |
db94535d CM |
2771 | BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64); |
2772 | BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64); | |
80ff3856 YZ |
2773 | BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item, |
2774 | last_snapshot, 64); | |
8ea05e3a AB |
2775 | BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item, |
2776 | generation_v2, 64); | |
2777 | BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item, | |
2778 | ctransid, 64); | |
2779 | BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item, | |
2780 | otransid, 64); | |
2781 | BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item, | |
2782 | stransid, 64); | |
2783 | BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item, | |
2784 | rtransid, 64); | |
123abc88 | 2785 | |
b83cc969 LZ |
2786 | static inline bool btrfs_root_readonly(struct btrfs_root *root) |
2787 | { | |
6ed3cf2c | 2788 | return (root->root_item.flags & cpu_to_le64(BTRFS_ROOT_SUBVOL_RDONLY)) != 0; |
b83cc969 LZ |
2789 | } |
2790 | ||
af31f5e5 CM |
2791 | /* struct btrfs_root_backup */ |
2792 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup, | |
2793 | tree_root, 64); | |
2794 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup, | |
2795 | tree_root_gen, 64); | |
2796 | BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup, | |
2797 | tree_root_level, 8); | |
2798 | ||
2799 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup, | |
2800 | chunk_root, 64); | |
2801 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup, | |
2802 | chunk_root_gen, 64); | |
2803 | BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup, | |
2804 | chunk_root_level, 8); | |
2805 | ||
2806 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup, | |
2807 | extent_root, 64); | |
2808 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup, | |
2809 | extent_root_gen, 64); | |
2810 | BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup, | |
2811 | extent_root_level, 8); | |
2812 | ||
2813 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup, | |
2814 | fs_root, 64); | |
2815 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup, | |
2816 | fs_root_gen, 64); | |
2817 | BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup, | |
2818 | fs_root_level, 8); | |
2819 | ||
2820 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup, | |
2821 | dev_root, 64); | |
2822 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup, | |
2823 | dev_root_gen, 64); | |
2824 | BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup, | |
2825 | dev_root_level, 8); | |
2826 | ||
2827 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup, | |
2828 | csum_root, 64); | |
2829 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup, | |
2830 | csum_root_gen, 64); | |
2831 | BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup, | |
2832 | csum_root_level, 8); | |
2833 | BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup, | |
2834 | total_bytes, 64); | |
2835 | BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup, | |
2836 | bytes_used, 64); | |
2837 | BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup, | |
2838 | num_devices, 64); | |
2839 | ||
0940ebf6 ID |
2840 | /* struct btrfs_balance_item */ |
2841 | BTRFS_SETGET_FUNCS(balance_flags, struct btrfs_balance_item, flags, 64); | |
607d432d | 2842 | |
0940ebf6 ID |
2843 | static inline void btrfs_balance_data(struct extent_buffer *eb, |
2844 | struct btrfs_balance_item *bi, | |
2845 | struct btrfs_disk_balance_args *ba) | |
2846 | { | |
2847 | read_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2848 | } | |
2849 | ||
2850 | static inline void btrfs_set_balance_data(struct extent_buffer *eb, | |
2851 | struct btrfs_balance_item *bi, | |
2852 | struct btrfs_disk_balance_args *ba) | |
2853 | { | |
2854 | write_eb_member(eb, bi, struct btrfs_balance_item, data, ba); | |
2855 | } | |
2856 | ||
2857 | static inline void btrfs_balance_meta(struct extent_buffer *eb, | |
2858 | struct btrfs_balance_item *bi, | |
2859 | struct btrfs_disk_balance_args *ba) | |
2860 | { | |
2861 | read_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2862 | } | |
2863 | ||
2864 | static inline void btrfs_set_balance_meta(struct extent_buffer *eb, | |
2865 | struct btrfs_balance_item *bi, | |
2866 | struct btrfs_disk_balance_args *ba) | |
2867 | { | |
2868 | write_eb_member(eb, bi, struct btrfs_balance_item, meta, ba); | |
2869 | } | |
2870 | ||
2871 | static inline void btrfs_balance_sys(struct extent_buffer *eb, | |
2872 | struct btrfs_balance_item *bi, | |
2873 | struct btrfs_disk_balance_args *ba) | |
2874 | { | |
2875 | read_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2876 | } | |
2877 | ||
2878 | static inline void btrfs_set_balance_sys(struct extent_buffer *eb, | |
2879 | struct btrfs_balance_item *bi, | |
2880 | struct btrfs_disk_balance_args *ba) | |
2881 | { | |
2882 | write_eb_member(eb, bi, struct btrfs_balance_item, sys, ba); | |
2883 | } | |
2884 | ||
2885 | static inline void | |
2886 | btrfs_disk_balance_args_to_cpu(struct btrfs_balance_args *cpu, | |
2887 | struct btrfs_disk_balance_args *disk) | |
2888 | { | |
2889 | memset(cpu, 0, sizeof(*cpu)); | |
2890 | ||
2891 | cpu->profiles = le64_to_cpu(disk->profiles); | |
2892 | cpu->usage = le64_to_cpu(disk->usage); | |
2893 | cpu->devid = le64_to_cpu(disk->devid); | |
2894 | cpu->pstart = le64_to_cpu(disk->pstart); | |
2895 | cpu->pend = le64_to_cpu(disk->pend); | |
2896 | cpu->vstart = le64_to_cpu(disk->vstart); | |
2897 | cpu->vend = le64_to_cpu(disk->vend); | |
2898 | cpu->target = le64_to_cpu(disk->target); | |
2899 | cpu->flags = le64_to_cpu(disk->flags); | |
2900 | } | |
2901 | ||
2902 | static inline void | |
2903 | btrfs_cpu_balance_args_to_disk(struct btrfs_disk_balance_args *disk, | |
2904 | struct btrfs_balance_args *cpu) | |
2905 | { | |
2906 | memset(disk, 0, sizeof(*disk)); | |
2907 | ||
2908 | disk->profiles = cpu_to_le64(cpu->profiles); | |
2909 | disk->usage = cpu_to_le64(cpu->usage); | |
2910 | disk->devid = cpu_to_le64(cpu->devid); | |
2911 | disk->pstart = cpu_to_le64(cpu->pstart); | |
2912 | disk->pend = cpu_to_le64(cpu->pend); | |
2913 | disk->vstart = cpu_to_le64(cpu->vstart); | |
2914 | disk->vend = cpu_to_le64(cpu->vend); | |
2915 | disk->target = cpu_to_le64(cpu->target); | |
2916 | disk->flags = cpu_to_le64(cpu->flags); | |
2917 | } | |
2918 | ||
2919 | /* struct btrfs_super_block */ | |
db94535d | 2920 | BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64); |
a061fc8d | 2921 | BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64); |
5f39d397 CM |
2922 | BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block, |
2923 | generation, 64); | |
2924 | BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64); | |
0b86a832 CM |
2925 | BTRFS_SETGET_STACK_FUNCS(super_sys_array_size, |
2926 | struct btrfs_super_block, sys_chunk_array_size, 32); | |
84234f3a YZ |
2927 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation, |
2928 | struct btrfs_super_block, chunk_root_generation, 64); | |
db94535d CM |
2929 | BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block, |
2930 | root_level, 8); | |
0b86a832 CM |
2931 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block, |
2932 | chunk_root, 64); | |
2933 | BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, | |
e02119d5 CM |
2934 | chunk_root_level, 8); |
2935 | BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, | |
2936 | log_root, 64); | |
c3027eb5 CM |
2937 | BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, |
2938 | log_root_transid, 64); | |
e02119d5 CM |
2939 | BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, |
2940 | log_root_level, 8); | |
db94535d CM |
2941 | BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, |
2942 | total_bytes, 64); | |
2943 | BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block, | |
2944 | bytes_used, 64); | |
5f39d397 CM |
2945 | BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block, |
2946 | sectorsize, 32); | |
2947 | BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block, | |
2948 | nodesize, 32); | |
2949 | BTRFS_SETGET_STACK_FUNCS(super_leafsize, struct btrfs_super_block, | |
2950 | leafsize, 32); | |
87ee04eb CM |
2951 | BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, |
2952 | stripesize, 32); | |
5f39d397 CM |
2953 | BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, |
2954 | root_dir_objectid, 64); | |
8a4b83cc CM |
2955 | BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, |
2956 | num_devices, 64); | |
f2b636e8 JB |
2957 | BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block, |
2958 | compat_flags, 64); | |
2959 | BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block, | |
12534832 | 2960 | compat_ro_flags, 64); |
f2b636e8 JB |
2961 | BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block, |
2962 | incompat_flags, 64); | |
607d432d JB |
2963 | BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block, |
2964 | csum_type, 16); | |
0af3d00b JB |
2965 | BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block, |
2966 | cache_generation, 64); | |
3cae210f | 2967 | BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64); |
26432799 SB |
2968 | BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block, |
2969 | uuid_tree_generation, 64); | |
607d432d JB |
2970 | |
2971 | static inline int btrfs_super_csum_size(struct btrfs_super_block *s) | |
2972 | { | |
1104a885 DS |
2973 | u16 t = btrfs_super_csum_type(s); |
2974 | /* | |
2975 | * csum type is validated at mount time | |
2976 | */ | |
607d432d JB |
2977 | return btrfs_csum_sizes[t]; |
2978 | } | |
2e635a27 | 2979 | |
5f39d397 | 2980 | static inline unsigned long btrfs_leaf_data(struct extent_buffer *l) |
2e635a27 | 2981 | { |
5f39d397 | 2982 | return offsetof(struct btrfs_leaf, items); |
2e635a27 CM |
2983 | } |
2984 | ||
5f39d397 CM |
2985 | /* struct btrfs_file_extent_item */ |
2986 | BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8); | |
3cae210f QW |
2987 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, |
2988 | struct btrfs_file_extent_item, disk_bytenr, 64); | |
2989 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, | |
2990 | struct btrfs_file_extent_item, offset, 64); | |
2991 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, | |
2992 | struct btrfs_file_extent_item, generation, 64); | |
2993 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, | |
2994 | struct btrfs_file_extent_item, num_bytes, 64); | |
e20d6c5b JB |
2995 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_num_bytes, |
2996 | struct btrfs_file_extent_item, disk_num_bytes, 64); | |
2997 | BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, | |
2998 | struct btrfs_file_extent_item, compression, 8); | |
9f5fae2f | 2999 | |
d397712b CM |
3000 | static inline unsigned long |
3001 | btrfs_file_extent_inline_start(struct btrfs_file_extent_item *e) | |
236454df | 3002 | { |
5f39d397 | 3003 | unsigned long offset = (unsigned long)e; |
db94535d | 3004 | offset += offsetof(struct btrfs_file_extent_item, disk_bytenr); |
5f39d397 | 3005 | return offset; |
236454df CM |
3006 | } |
3007 | ||
3008 | static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize) | |
3009 | { | |
db94535d | 3010 | return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize; |
9f5fae2f CM |
3011 | } |
3012 | ||
db94535d CM |
3013 | BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item, |
3014 | disk_bytenr, 64); | |
5f39d397 CM |
3015 | BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item, |
3016 | generation, 64); | |
db94535d CM |
3017 | BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item, |
3018 | disk_num_bytes, 64); | |
5f39d397 CM |
3019 | BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item, |
3020 | offset, 64); | |
db94535d CM |
3021 | BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item, |
3022 | num_bytes, 64); | |
c8b97818 CM |
3023 | BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item, |
3024 | ram_bytes, 64); | |
3025 | BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item, | |
3026 | compression, 8); | |
3027 | BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, | |
3028 | encryption, 8); | |
3029 | BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, | |
3030 | other_encoding, 16); | |
3031 | ||
c8b97818 CM |
3032 | /* |
3033 | * this returns the number of bytes used by the item on disk, minus the | |
3034 | * size of any extent headers. If a file is compressed on disk, this is | |
3035 | * the compressed size | |
3036 | */ | |
3037 | static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, | |
3038 | struct btrfs_item *e) | |
3039 | { | |
3040 | unsigned long offset; | |
3041 | offset = offsetof(struct btrfs_file_extent_item, disk_bytenr); | |
3042 | return btrfs_item_size(eb, e) - offset; | |
3043 | } | |
9f5fae2f | 3044 | |
514ac8ad CM |
3045 | /* this returns the number of file bytes represented by the inline item. |
3046 | * If an item is compressed, this is the uncompressed size | |
3047 | */ | |
3048 | static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, | |
3049 | int slot, | |
3050 | struct btrfs_file_extent_item *fi) | |
3051 | { | |
3052 | struct btrfs_map_token token; | |
3053 | ||
3054 | btrfs_init_map_token(&token); | |
3055 | /* | |
3056 | * return the space used on disk if this item isn't | |
3057 | * compressed or encoded | |
3058 | */ | |
3059 | if (btrfs_token_file_extent_compression(eb, fi, &token) == 0 && | |
3060 | btrfs_token_file_extent_encryption(eb, fi, &token) == 0 && | |
3061 | btrfs_token_file_extent_other_encoding(eb, fi, &token) == 0) { | |
3062 | return btrfs_file_extent_inline_item_len(eb, | |
3063 | btrfs_item_nr(slot)); | |
3064 | } | |
3065 | ||
3066 | /* otherwise use the ram bytes field */ | |
3067 | return btrfs_token_file_extent_ram_bytes(eb, fi, &token); | |
3068 | } | |
3069 | ||
3070 | ||
733f4fbb SB |
3071 | /* btrfs_dev_stats_item */ |
3072 | static inline u64 btrfs_dev_stats_value(struct extent_buffer *eb, | |
3073 | struct btrfs_dev_stats_item *ptr, | |
3074 | int index) | |
3075 | { | |
3076 | u64 val; | |
3077 | ||
3078 | read_extent_buffer(eb, &val, | |
3079 | offsetof(struct btrfs_dev_stats_item, values) + | |
3080 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
3081 | sizeof(val)); | |
3082 | return val; | |
3083 | } | |
3084 | ||
3085 | static inline void btrfs_set_dev_stats_value(struct extent_buffer *eb, | |
3086 | struct btrfs_dev_stats_item *ptr, | |
3087 | int index, u64 val) | |
3088 | { | |
3089 | write_extent_buffer(eb, &val, | |
3090 | offsetof(struct btrfs_dev_stats_item, values) + | |
3091 | ((unsigned long)ptr) + (index * sizeof(u64)), | |
3092 | sizeof(val)); | |
3093 | } | |
3094 | ||
630dc772 AJ |
3095 | /* btrfs_qgroup_status_item */ |
3096 | BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item, | |
3097 | generation, 64); | |
3098 | BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item, | |
3099 | version, 64); | |
3100 | BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item, | |
3101 | flags, 64); | |
2f232036 JS |
3102 | BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item, |
3103 | rescan, 64); | |
630dc772 AJ |
3104 | |
3105 | /* btrfs_qgroup_info_item */ | |
3106 | BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item, | |
3107 | generation, 64); | |
3108 | BTRFS_SETGET_FUNCS(qgroup_info_rfer, struct btrfs_qgroup_info_item, rfer, 64); | |
3109 | BTRFS_SETGET_FUNCS(qgroup_info_rfer_cmpr, struct btrfs_qgroup_info_item, | |
3110 | rfer_cmpr, 64); | |
3111 | BTRFS_SETGET_FUNCS(qgroup_info_excl, struct btrfs_qgroup_info_item, excl, 64); | |
3112 | BTRFS_SETGET_FUNCS(qgroup_info_excl_cmpr, struct btrfs_qgroup_info_item, | |
3113 | excl_cmpr, 64); | |
3114 | ||
3115 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation, | |
3116 | struct btrfs_qgroup_info_item, generation, 64); | |
3117 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer, struct btrfs_qgroup_info_item, | |
3118 | rfer, 64); | |
3119 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_rfer_cmpr, | |
3120 | struct btrfs_qgroup_info_item, rfer_cmpr, 64); | |
3121 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl, struct btrfs_qgroup_info_item, | |
3122 | excl, 64); | |
3123 | BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_excl_cmpr, | |
3124 | struct btrfs_qgroup_info_item, excl_cmpr, 64); | |
3125 | ||
3126 | /* btrfs_qgroup_limit_item */ | |
3127 | BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item, | |
3128 | flags, 64); | |
3129 | BTRFS_SETGET_FUNCS(qgroup_limit_max_rfer, struct btrfs_qgroup_limit_item, | |
3130 | max_rfer, 64); | |
3131 | BTRFS_SETGET_FUNCS(qgroup_limit_max_excl, struct btrfs_qgroup_limit_item, | |
3132 | max_excl, 64); | |
3133 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_rfer, struct btrfs_qgroup_limit_item, | |
3134 | rsv_rfer, 64); | |
3135 | BTRFS_SETGET_FUNCS(qgroup_limit_rsv_excl, struct btrfs_qgroup_limit_item, | |
3136 | rsv_excl, 64); | |
3137 | ||
a2bff640 SB |
3138 | /* btrfs_dev_replace_item */ |
3139 | BTRFS_SETGET_FUNCS(dev_replace_src_devid, | |
3140 | struct btrfs_dev_replace_item, src_devid, 64); | |
3141 | BTRFS_SETGET_FUNCS(dev_replace_cont_reading_from_srcdev_mode, | |
3142 | struct btrfs_dev_replace_item, cont_reading_from_srcdev_mode, | |
3143 | 64); | |
3144 | BTRFS_SETGET_FUNCS(dev_replace_replace_state, struct btrfs_dev_replace_item, | |
3145 | replace_state, 64); | |
3146 | BTRFS_SETGET_FUNCS(dev_replace_time_started, struct btrfs_dev_replace_item, | |
3147 | time_started, 64); | |
3148 | BTRFS_SETGET_FUNCS(dev_replace_time_stopped, struct btrfs_dev_replace_item, | |
3149 | time_stopped, 64); | |
3150 | BTRFS_SETGET_FUNCS(dev_replace_num_write_errors, struct btrfs_dev_replace_item, | |
3151 | num_write_errors, 64); | |
3152 | BTRFS_SETGET_FUNCS(dev_replace_num_uncorrectable_read_errors, | |
3153 | struct btrfs_dev_replace_item, num_uncorrectable_read_errors, | |
3154 | 64); | |
3155 | BTRFS_SETGET_FUNCS(dev_replace_cursor_left, struct btrfs_dev_replace_item, | |
3156 | cursor_left, 64); | |
3157 | BTRFS_SETGET_FUNCS(dev_replace_cursor_right, struct btrfs_dev_replace_item, | |
3158 | cursor_right, 64); | |
3159 | ||
3160 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_src_devid, | |
3161 | struct btrfs_dev_replace_item, src_devid, 64); | |
3162 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cont_reading_from_srcdev_mode, | |
3163 | struct btrfs_dev_replace_item, | |
3164 | cont_reading_from_srcdev_mode, 64); | |
3165 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_replace_state, | |
3166 | struct btrfs_dev_replace_item, replace_state, 64); | |
3167 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_started, | |
3168 | struct btrfs_dev_replace_item, time_started, 64); | |
3169 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_time_stopped, | |
3170 | struct btrfs_dev_replace_item, time_stopped, 64); | |
3171 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_write_errors, | |
3172 | struct btrfs_dev_replace_item, num_write_errors, 64); | |
3173 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_num_uncorrectable_read_errors, | |
3174 | struct btrfs_dev_replace_item, | |
3175 | num_uncorrectable_read_errors, 64); | |
3176 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_left, | |
3177 | struct btrfs_dev_replace_item, cursor_left, 64); | |
3178 | BTRFS_SETGET_STACK_FUNCS(stack_dev_replace_cursor_right, | |
3179 | struct btrfs_dev_replace_item, cursor_right, 64); | |
3180 | ||
815745cf | 3181 | static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) |
e20d96d6 CM |
3182 | { |
3183 | return sb->s_fs_info; | |
3184 | } | |
3185 | ||
d397712b CM |
3186 | static inline u32 btrfs_level_size(struct btrfs_root *root, int level) |
3187 | { | |
db94535d CM |
3188 | if (level == 0) |
3189 | return root->leafsize; | |
3190 | return root->nodesize; | |
3191 | } | |
3192 | ||
4beb1b8b CM |
3193 | /* helper function to cast into the data area of the leaf. */ |
3194 | #define btrfs_item_ptr(leaf, slot, type) \ | |
123abc88 | 3195 | ((type *)(btrfs_leaf_data(leaf) + \ |
5f39d397 CM |
3196 | btrfs_item_offset_nr(leaf, slot))) |
3197 | ||
3198 | #define btrfs_item_ptr_offset(leaf, slot) \ | |
3199 | ((unsigned long)(btrfs_leaf_data(leaf) + \ | |
3200 | btrfs_item_offset_nr(leaf, slot))) | |
4beb1b8b | 3201 | |
67377734 JB |
3202 | static inline bool btrfs_mixed_space_info(struct btrfs_space_info *space_info) |
3203 | { | |
3204 | return ((space_info->flags & BTRFS_BLOCK_GROUP_METADATA) && | |
3205 | (space_info->flags & BTRFS_BLOCK_GROUP_DATA)); | |
3206 | } | |
3207 | ||
3b16a4e3 JB |
3208 | static inline gfp_t btrfs_alloc_write_mask(struct address_space *mapping) |
3209 | { | |
3210 | return mapping_gfp_mask(mapping) & ~__GFP_FS; | |
3211 | } | |
3212 | ||
b18c6685 | 3213 | /* extent-tree.c */ |
16cdcec7 | 3214 | static inline u64 btrfs_calc_trans_metadata_size(struct btrfs_root *root, |
9e0baf60 | 3215 | unsigned num_items) |
16cdcec7 MX |
3216 | { |
3217 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
c4fbb430 | 3218 | 2 * num_items; |
07127184 JB |
3219 | } |
3220 | ||
3221 | /* | |
3222 | * Doing a truncate won't result in new nodes or leaves, just what we need for | |
3223 | * COW. | |
3224 | */ | |
3225 | static inline u64 btrfs_calc_trunc_metadata_size(struct btrfs_root *root, | |
3226 | unsigned num_items) | |
3227 | { | |
3228 | return (root->leafsize + root->nodesize * (BTRFS_MAX_LEVEL - 1)) * | |
3229 | num_items; | |
16cdcec7 MX |
3230 | } |
3231 | ||
1be41b78 JB |
3232 | int btrfs_should_throttle_delayed_refs(struct btrfs_trans_handle *trans, |
3233 | struct btrfs_root *root); | |
0a2b2a84 JB |
3234 | int btrfs_check_space_for_delayed_refs(struct btrfs_trans_handle *trans, |
3235 | struct btrfs_root *root); | |
fa9c0d79 | 3236 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
56bec294 CM |
3237 | int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, |
3238 | struct btrfs_root *root, unsigned long count); | |
31840ae1 | 3239 | int btrfs_lookup_extent(struct btrfs_root *root, u64 start, u64 len); |
a22285a6 YZ |
3240 | int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans, |
3241 | struct btrfs_root *root, u64 bytenr, | |
3173a18f | 3242 | u64 offset, int metadata, u64 *refs, u64 *flags); |
11833d66 YZ |
3243 | int btrfs_pin_extent(struct btrfs_root *root, |
3244 | u64 bytenr, u64 num, int reserved); | |
dcfac415 | 3245 | int btrfs_pin_extent_for_log_replay(struct btrfs_root *root, |
e688b725 | 3246 | u64 bytenr, u64 num_bytes); |
8c2a1a30 JB |
3247 | int btrfs_exclude_logged_extents(struct btrfs_root *root, |
3248 | struct extent_buffer *eb); | |
80ff3856 | 3249 | int btrfs_cross_ref_exist(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
3250 | struct btrfs_root *root, |
3251 | u64 objectid, u64 offset, u64 bytenr); | |
d397712b CM |
3252 | struct btrfs_block_group_cache *btrfs_lookup_block_group( |
3253 | struct btrfs_fs_info *info, | |
3254 | u64 bytenr); | |
5d4f98a2 | 3255 | void btrfs_put_block_group(struct btrfs_block_group_cache *cache); |
6ab0a202 | 3256 | int get_block_group_index(struct btrfs_block_group_cache *cache); |
5f39d397 | 3257 | struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, |
5d4f98a2 YZ |
3258 | struct btrfs_root *root, u32 blocksize, |
3259 | u64 parent, u64 root_objectid, | |
3260 | struct btrfs_disk_key *key, int level, | |
5581a51a | 3261 | u64 hint, u64 empty_size); |
f0486c68 YZ |
3262 | void btrfs_free_tree_block(struct btrfs_trans_handle *trans, |
3263 | struct btrfs_root *root, | |
3264 | struct extent_buffer *buf, | |
5581a51a | 3265 | u64 parent, int last_ref); |
5d4f98a2 YZ |
3266 | int btrfs_alloc_reserved_file_extent(struct btrfs_trans_handle *trans, |
3267 | struct btrfs_root *root, | |
3268 | u64 root_objectid, u64 owner, | |
3269 | u64 offset, struct btrfs_key *ins); | |
3270 | int btrfs_alloc_logged_file_extent(struct btrfs_trans_handle *trans, | |
3271 | struct btrfs_root *root, | |
3272 | u64 root_objectid, u64 owner, u64 offset, | |
3273 | struct btrfs_key *ins); | |
00361589 JB |
3274 | int btrfs_reserve_extent(struct btrfs_root *root, u64 num_bytes, |
3275 | u64 min_alloc_size, u64 empty_size, u64 hint_byte, | |
3276 | struct btrfs_key *ins, int is_data); | |
e089f05c | 3277 | int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 3278 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 | 3279 | int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
66d7e7f0 | 3280 | struct extent_buffer *buf, int full_backref, int for_cow); |
5d4f98a2 YZ |
3281 | int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans, |
3282 | struct btrfs_root *root, | |
3283 | u64 bytenr, u64 num_bytes, u64 flags, | |
b1c79e09 | 3284 | int level, int is_data); |
31840ae1 ZY |
3285 | int btrfs_free_extent(struct btrfs_trans_handle *trans, |
3286 | struct btrfs_root *root, | |
66d7e7f0 AJ |
3287 | u64 bytenr, u64 num_bytes, u64 parent, u64 root_objectid, |
3288 | u64 owner, u64 offset, int for_cow); | |
5d4f98a2 | 3289 | |
65b51a00 | 3290 | int btrfs_free_reserved_extent(struct btrfs_root *root, u64 start, u64 len); |
e688b725 CM |
3291 | int btrfs_free_and_pin_reserved_extent(struct btrfs_root *root, |
3292 | u64 start, u64 len); | |
143bede5 JM |
3293 | void btrfs_prepare_extent_commit(struct btrfs_trans_handle *trans, |
3294 | struct btrfs_root *root); | |
ccd467d6 | 3295 | int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans, |
11833d66 | 3296 | struct btrfs_root *root); |
b18c6685 | 3297 | int btrfs_inc_extent_ref(struct btrfs_trans_handle *trans, |
31840ae1 ZY |
3298 | struct btrfs_root *root, |
3299 | u64 bytenr, u64 num_bytes, u64 parent, | |
66d7e7f0 | 3300 | u64 root_objectid, u64 owner, u64 offset, int for_cow); |
5d4f98a2 | 3301 | |
9078a3e1 CM |
3302 | int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, |
3303 | struct btrfs_root *root); | |
d2fb3437 | 3304 | int btrfs_extent_readonly(struct btrfs_root *root, u64 bytenr); |
9078a3e1 CM |
3305 | int btrfs_free_block_groups(struct btrfs_fs_info *info); |
3306 | int btrfs_read_block_groups(struct btrfs_root *root); | |
ba1bf481 | 3307 | int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr); |
0b86a832 CM |
3308 | int btrfs_make_block_group(struct btrfs_trans_handle *trans, |
3309 | struct btrfs_root *root, u64 bytes_used, | |
e17cade2 | 3310 | u64 type, u64 chunk_objectid, u64 chunk_offset, |
0b86a832 | 3311 | u64 size); |
1a40e23b ZY |
3312 | int btrfs_remove_block_group(struct btrfs_trans_handle *trans, |
3313 | struct btrfs_root *root, u64 group_start); | |
ea658bad JB |
3314 | void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans, |
3315 | struct btrfs_root *root); | |
6d07bcec | 3316 | u64 btrfs_get_alloc_profile(struct btrfs_root *root, int data); |
4184ea7f | 3317 | void btrfs_clear_space_info_full(struct btrfs_fs_info *info); |
08e007d2 MX |
3318 | |
3319 | enum btrfs_reserve_flush_enum { | |
3320 | /* If we are in the transaction, we can't flush anything.*/ | |
3321 | BTRFS_RESERVE_NO_FLUSH, | |
3322 | /* | |
3323 | * Flushing delalloc may cause deadlock somewhere, in this | |
3324 | * case, use FLUSH LIMIT | |
3325 | */ | |
3326 | BTRFS_RESERVE_FLUSH_LIMIT, | |
3327 | BTRFS_RESERVE_FLUSH_ALL, | |
3328 | }; | |
3329 | ||
0ca1f7ce YZ |
3330 | int btrfs_check_data_free_space(struct inode *inode, u64 bytes); |
3331 | void btrfs_free_reserved_data_space(struct inode *inode, u64 bytes); | |
a22285a6 YZ |
3332 | void btrfs_trans_release_metadata(struct btrfs_trans_handle *trans, |
3333 | struct btrfs_root *root); | |
d68fc57b YZ |
3334 | int btrfs_orphan_reserve_metadata(struct btrfs_trans_handle *trans, |
3335 | struct inode *inode); | |
3336 | void btrfs_orphan_release_metadata(struct inode *inode); | |
d5c12070 MX |
3337 | int btrfs_subvolume_reserve_metadata(struct btrfs_root *root, |
3338 | struct btrfs_block_rsv *rsv, | |
3339 | int nitems, | |
ee3441b4 | 3340 | u64 *qgroup_reserved, bool use_global_rsv); |
d5c12070 MX |
3341 | void btrfs_subvolume_release_metadata(struct btrfs_root *root, |
3342 | struct btrfs_block_rsv *rsv, | |
3343 | u64 qgroup_reserved); | |
0ca1f7ce YZ |
3344 | int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes); |
3345 | void btrfs_delalloc_release_metadata(struct inode *inode, u64 num_bytes); | |
3346 | int btrfs_delalloc_reserve_space(struct inode *inode, u64 num_bytes); | |
3347 | void btrfs_delalloc_release_space(struct inode *inode, u64 num_bytes); | |
66d8f3dd MX |
3348 | void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type); |
3349 | struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_root *root, | |
3350 | unsigned short type); | |
f0486c68 YZ |
3351 | void btrfs_free_block_rsv(struct btrfs_root *root, |
3352 | struct btrfs_block_rsv *rsv); | |
4a92b1b8 | 3353 | int btrfs_block_rsv_add(struct btrfs_root *root, |
08e007d2 MX |
3354 | struct btrfs_block_rsv *block_rsv, u64 num_bytes, |
3355 | enum btrfs_reserve_flush_enum flush); | |
4a92b1b8 | 3356 | int btrfs_block_rsv_check(struct btrfs_root *root, |
36ba022a JB |
3357 | struct btrfs_block_rsv *block_rsv, int min_factor); |
3358 | int btrfs_block_rsv_refill(struct btrfs_root *root, | |
08e007d2 MX |
3359 | struct btrfs_block_rsv *block_rsv, u64 min_reserved, |
3360 | enum btrfs_reserve_flush_enum flush); | |
f0486c68 YZ |
3361 | int btrfs_block_rsv_migrate(struct btrfs_block_rsv *src_rsv, |
3362 | struct btrfs_block_rsv *dst_rsv, | |
3363 | u64 num_bytes); | |
d52be818 JB |
3364 | int btrfs_cond_migrate_bytes(struct btrfs_fs_info *fs_info, |
3365 | struct btrfs_block_rsv *dest, u64 num_bytes, | |
3366 | int min_factor); | |
f0486c68 YZ |
3367 | void btrfs_block_rsv_release(struct btrfs_root *root, |
3368 | struct btrfs_block_rsv *block_rsv, | |
3369 | u64 num_bytes); | |
3370 | int btrfs_set_block_group_ro(struct btrfs_root *root, | |
3371 | struct btrfs_block_group_cache *cache); | |
143bede5 JM |
3372 | void btrfs_set_block_group_rw(struct btrfs_root *root, |
3373 | struct btrfs_block_group_cache *cache); | |
0af3d00b | 3374 | void btrfs_put_block_group_cache(struct btrfs_fs_info *info); |
6d07bcec | 3375 | u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo); |
acce952b | 3376 | int btrfs_error_unpin_extent_range(struct btrfs_root *root, |
3377 | u64 start, u64 end); | |
3378 | int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr, | |
5378e607 | 3379 | u64 num_bytes, u64 *actual_bytes); |
c87f08ca CM |
3380 | int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans, |
3381 | struct btrfs_root *root, u64 type); | |
f7039b1d | 3382 | int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range); |
acce952b | 3383 | |
c59021f8 | 3384 | int btrfs_init_space_info(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
3385 | int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans, |
3386 | struct btrfs_fs_info *fs_info); | |
31e50229 | 3387 | int __get_raid_index(u64 flags); |
8257b2dc MX |
3388 | |
3389 | int btrfs_start_nocow_write(struct btrfs_root *root); | |
3390 | void btrfs_end_nocow_write(struct btrfs_root *root); | |
dee26a9f | 3391 | /* ctree.c */ |
5d4f98a2 YZ |
3392 | int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key, |
3393 | int level, int *slot); | |
3394 | int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); | |
0b86a832 CM |
3395 | int btrfs_previous_item(struct btrfs_root *root, |
3396 | struct btrfs_path *path, u64 min_objectid, | |
3397 | int type); | |
ade2e0b3 WS |
3398 | int btrfs_previous_extent_item(struct btrfs_root *root, |
3399 | struct btrfs_path *path, u64 min_objectid); | |
afe5fea7 | 3400 | void btrfs_set_item_key_safe(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3401 | struct btrfs_key *new_key); |
925baedd CM |
3402 | struct extent_buffer *btrfs_root_node(struct btrfs_root *root); |
3403 | struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); | |
e7a84565 | 3404 | int btrfs_find_next_key(struct btrfs_root *root, struct btrfs_path *path, |
3f157a2f | 3405 | struct btrfs_key *key, int lowest_level, |
de78b51a | 3406 | u64 min_trans); |
3f157a2f | 3407 | int btrfs_search_forward(struct btrfs_root *root, struct btrfs_key *min_key, |
de78b51a | 3408 | struct btrfs_path *path, |
3f157a2f | 3409 | u64 min_trans); |
7069830a AB |
3410 | enum btrfs_compare_tree_result { |
3411 | BTRFS_COMPARE_TREE_NEW, | |
3412 | BTRFS_COMPARE_TREE_DELETED, | |
3413 | BTRFS_COMPARE_TREE_CHANGED, | |
ba5e8f2e | 3414 | BTRFS_COMPARE_TREE_SAME, |
7069830a AB |
3415 | }; |
3416 | typedef int (*btrfs_changed_cb_t)(struct btrfs_root *left_root, | |
3417 | struct btrfs_root *right_root, | |
3418 | struct btrfs_path *left_path, | |
3419 | struct btrfs_path *right_path, | |
3420 | struct btrfs_key *key, | |
3421 | enum btrfs_compare_tree_result result, | |
3422 | void *ctx); | |
3423 | int btrfs_compare_trees(struct btrfs_root *left_root, | |
3424 | struct btrfs_root *right_root, | |
3425 | btrfs_changed_cb_t cb, void *ctx); | |
5f39d397 CM |
3426 | int btrfs_cow_block(struct btrfs_trans_handle *trans, |
3427 | struct btrfs_root *root, struct extent_buffer *buf, | |
3428 | struct extent_buffer *parent, int parent_slot, | |
9fa8cfe7 | 3429 | struct extent_buffer **cow_ret); |
be20aa9d CM |
3430 | int btrfs_copy_root(struct btrfs_trans_handle *trans, |
3431 | struct btrfs_root *root, | |
3432 | struct extent_buffer *buf, | |
3433 | struct extent_buffer **cow_ret, u64 new_root_objectid); | |
5d4f98a2 YZ |
3434 | int btrfs_block_can_be_shared(struct btrfs_root *root, |
3435 | struct extent_buffer *buf); | |
4b90c680 | 3436 | void btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3437 | u32 data_size); |
afe5fea7 | 3438 | void btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 | 3439 | u32 new_size, int from_end); |
459931ec CM |
3440 | int btrfs_split_item(struct btrfs_trans_handle *trans, |
3441 | struct btrfs_root *root, | |
3442 | struct btrfs_path *path, | |
3443 | struct btrfs_key *new_key, | |
3444 | unsigned long split_offset); | |
ad48fd75 YZ |
3445 | int btrfs_duplicate_item(struct btrfs_trans_handle *trans, |
3446 | struct btrfs_root *root, | |
3447 | struct btrfs_path *path, | |
3448 | struct btrfs_key *new_key); | |
e33d5c3d KN |
3449 | int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *path, |
3450 | u64 inum, u64 ioff, u8 key_type, struct btrfs_key *found_key); | |
e089f05c CM |
3451 | int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root |
3452 | *root, struct btrfs_key *key, struct btrfs_path *p, int | |
3453 | ins_len, int cow); | |
5d9e75c4 JS |
3454 | int btrfs_search_old_slot(struct btrfs_root *root, struct btrfs_key *key, |
3455 | struct btrfs_path *p, u64 time_seq); | |
2f38b3e1 AJ |
3456 | int btrfs_search_slot_for_read(struct btrfs_root *root, |
3457 | struct btrfs_key *key, struct btrfs_path *p, | |
3458 | int find_higher, int return_any); | |
6702ed49 | 3459 | int btrfs_realloc_node(struct btrfs_trans_handle *trans, |
5f39d397 | 3460 | struct btrfs_root *root, struct extent_buffer *parent, |
de78b51a | 3461 | int start_slot, u64 *last_ret, |
a6b6e75e | 3462 | struct btrfs_key *progress); |
b3b4aa74 | 3463 | void btrfs_release_path(struct btrfs_path *p); |
2c90e5d6 CM |
3464 | struct btrfs_path *btrfs_alloc_path(void); |
3465 | void btrfs_free_path(struct btrfs_path *p); | |
b4ce94de | 3466 | void btrfs_set_path_blocking(struct btrfs_path *p); |
16cdcec7 | 3467 | void btrfs_clear_path_blocking(struct btrfs_path *p, |
bd681513 | 3468 | struct extent_buffer *held, int held_rw); |
b4ce94de CM |
3469 | void btrfs_unlock_up_safe(struct btrfs_path *p, int level); |
3470 | ||
85e21bac CM |
3471 | int btrfs_del_items(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3472 | struct btrfs_path *path, int slot, int nr); | |
85e21bac CM |
3473 | static inline int btrfs_del_item(struct btrfs_trans_handle *trans, |
3474 | struct btrfs_root *root, | |
3475 | struct btrfs_path *path) | |
3476 | { | |
3477 | return btrfs_del_items(trans, root, path, path->slots[0], 1); | |
3478 | } | |
3479 | ||
afe5fea7 | 3480 | void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path, |
143bede5 JM |
3481 | struct btrfs_key *cpu_key, u32 *data_size, |
3482 | u32 total_data, u32 total_size, int nr); | |
e089f05c CM |
3483 | int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root |
3484 | *root, struct btrfs_key *key, void *data, u32 data_size); | |
9c58309d CM |
3485 | int btrfs_insert_empty_items(struct btrfs_trans_handle *trans, |
3486 | struct btrfs_root *root, | |
3487 | struct btrfs_path *path, | |
3488 | struct btrfs_key *cpu_key, u32 *data_size, int nr); | |
3489 | ||
3490 | static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, | |
3491 | struct btrfs_root *root, | |
3492 | struct btrfs_path *path, | |
3493 | struct btrfs_key *key, | |
3494 | u32 data_size) | |
3495 | { | |
3496 | return btrfs_insert_empty_items(trans, root, path, key, &data_size, 1); | |
3497 | } | |
3498 | ||
234b63a0 | 3499 | int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path); |
16e7549f | 3500 | int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path); |
3d7806ec JS |
3501 | int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, |
3502 | u64 time_seq); | |
1c8f52a5 AB |
3503 | static inline int btrfs_next_old_item(struct btrfs_root *root, |
3504 | struct btrfs_path *p, u64 time_seq) | |
c7d22a3c JS |
3505 | { |
3506 | ++p->slots[0]; | |
3507 | if (p->slots[0] >= btrfs_header_nritems(p->nodes[0])) | |
1c8f52a5 | 3508 | return btrfs_next_old_leaf(root, p, time_seq); |
c7d22a3c JS |
3509 | return 0; |
3510 | } | |
1c8f52a5 AB |
3511 | static inline int btrfs_next_item(struct btrfs_root *root, struct btrfs_path *p) |
3512 | { | |
3513 | return btrfs_next_old_item(root, p, 0); | |
3514 | } | |
5f39d397 | 3515 | int btrfs_leaf_free_space(struct btrfs_root *root, struct extent_buffer *leaf); |
2c536799 JM |
3516 | int __must_check btrfs_drop_snapshot(struct btrfs_root *root, |
3517 | struct btrfs_block_rsv *block_rsv, | |
3518 | int update_ref, int for_reloc); | |
f82d02d9 YZ |
3519 | int btrfs_drop_subtree(struct btrfs_trans_handle *trans, |
3520 | struct btrfs_root *root, | |
3521 | struct extent_buffer *node, | |
3522 | struct extent_buffer *parent); | |
7841cb28 DS |
3523 | static inline int btrfs_fs_closing(struct btrfs_fs_info *fs_info) |
3524 | { | |
3525 | /* | |
3526 | * Get synced with close_ctree() | |
3527 | */ | |
3528 | smp_mb(); | |
3529 | return fs_info->closing; | |
3530 | } | |
babbf170 MX |
3531 | |
3532 | /* | |
3533 | * If we remount the fs to be R/O or umount the fs, the cleaner needn't do | |
3534 | * anything except sleeping. This function is used to check the status of | |
3535 | * the fs. | |
3536 | */ | |
3537 | static inline int btrfs_need_cleaner_sleep(struct btrfs_root *root) | |
3538 | { | |
3539 | return (root->fs_info->sb->s_flags & MS_RDONLY || | |
3540 | btrfs_fs_closing(root->fs_info)); | |
3541 | } | |
3542 | ||
6c41761f DS |
3543 | static inline void free_fs_info(struct btrfs_fs_info *fs_info) |
3544 | { | |
837d5b6e | 3545 | kfree(fs_info->balance_ctl); |
6c41761f DS |
3546 | kfree(fs_info->delayed_root); |
3547 | kfree(fs_info->extent_root); | |
3548 | kfree(fs_info->tree_root); | |
3549 | kfree(fs_info->chunk_root); | |
3550 | kfree(fs_info->dev_root); | |
3551 | kfree(fs_info->csum_root); | |
bcef60f2 | 3552 | kfree(fs_info->quota_root); |
d8f98039 | 3553 | kfree(fs_info->uuid_root); |
6c41761f DS |
3554 | kfree(fs_info->super_copy); |
3555 | kfree(fs_info->super_for_commit); | |
3556 | kfree(fs_info); | |
3557 | } | |
7841cb28 | 3558 | |
097b8a7c JS |
3559 | /* tree mod log functions from ctree.c */ |
3560 | u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3561 | struct seq_list *elem); | |
3562 | void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info, | |
3563 | struct seq_list *elem); | |
fc36ed7e | 3564 | u64 btrfs_tree_mod_seq_prev(u64 seq); |
5b6602e7 | 3565 | int btrfs_old_root_level(struct btrfs_root *root, u64 time_seq); |
097b8a7c | 3566 | |
dee26a9f | 3567 | /* root-item.c */ |
ea9e8b11 | 3568 | int btrfs_find_root_ref(struct btrfs_root *tree_root, |
4df27c4d YZ |
3569 | struct btrfs_path *path, |
3570 | u64 root_id, u64 ref_id); | |
0660b5af CM |
3571 | int btrfs_add_root_ref(struct btrfs_trans_handle *trans, |
3572 | struct btrfs_root *tree_root, | |
4df27c4d YZ |
3573 | u64 root_id, u64 ref_id, u64 dirid, u64 sequence, |
3574 | const char *name, int name_len); | |
3575 | int btrfs_del_root_ref(struct btrfs_trans_handle *trans, | |
3576 | struct btrfs_root *tree_root, | |
3577 | u64 root_id, u64 ref_id, u64 dirid, u64 *sequence, | |
0660b5af | 3578 | const char *name, int name_len); |
e089f05c CM |
3579 | int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, |
3580 | struct btrfs_key *key); | |
3581 | int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root | |
3582 | *root, struct btrfs_key *key, struct btrfs_root_item | |
3583 | *item); | |
b45a9d8b JM |
3584 | int __must_check btrfs_update_root(struct btrfs_trans_handle *trans, |
3585 | struct btrfs_root *root, | |
3586 | struct btrfs_key *key, | |
3587 | struct btrfs_root_item *item); | |
cb517eab MX |
3588 | int btrfs_find_root(struct btrfs_root *root, struct btrfs_key *search_key, |
3589 | struct btrfs_path *path, struct btrfs_root_item *root_item, | |
3590 | struct btrfs_key *root_key); | |
76dda93c | 3591 | int btrfs_find_orphan_roots(struct btrfs_root *tree_root); |
bf5f32ec MF |
3592 | void btrfs_set_root_node(struct btrfs_root_item *item, |
3593 | struct extent_buffer *node); | |
08fe4db1 | 3594 | void btrfs_check_and_init_root_item(struct btrfs_root_item *item); |
8ea05e3a AB |
3595 | void btrfs_update_root_times(struct btrfs_trans_handle *trans, |
3596 | struct btrfs_root *root); | |
08fe4db1 | 3597 | |
07b30a49 SB |
3598 | /* uuid-tree.c */ |
3599 | int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, | |
3600 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
3601 | u64 subid); | |
3602 | int btrfs_uuid_tree_rem(struct btrfs_trans_handle *trans, | |
3603 | struct btrfs_root *uuid_root, u8 *uuid, u8 type, | |
3604 | u64 subid); | |
70f80175 SB |
3605 | int btrfs_uuid_tree_iterate(struct btrfs_fs_info *fs_info, |
3606 | int (*check_func)(struct btrfs_fs_info *, u8 *, u8, | |
3607 | u64)); | |
07b30a49 | 3608 | |
dee26a9f | 3609 | /* dir-item.c */ |
9c52057c CM |
3610 | int btrfs_check_dir_item_collision(struct btrfs_root *root, u64 dir, |
3611 | const char *name, int name_len); | |
d397712b CM |
3612 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, |
3613 | struct btrfs_root *root, const char *name, | |
16cdcec7 | 3614 | int name_len, struct inode *dir, |
aec7477b | 3615 | struct btrfs_key *location, u8 type, u64 index); |
7e38180e CM |
3616 | struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, |
3617 | struct btrfs_root *root, | |
3618 | struct btrfs_path *path, u64 dir, | |
3619 | const char *name, int name_len, | |
3620 | int mod); | |
3621 | struct btrfs_dir_item * | |
3622 | btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, | |
3623 | struct btrfs_root *root, | |
3624 | struct btrfs_path *path, u64 dir, | |
3625 | u64 objectid, const char *name, int name_len, | |
3626 | int mod); | |
4df27c4d YZ |
3627 | struct btrfs_dir_item * |
3628 | btrfs_search_dir_index_item(struct btrfs_root *root, | |
3629 | struct btrfs_path *path, u64 dirid, | |
3630 | const char *name, int name_len); | |
7e38180e CM |
3631 | int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, |
3632 | struct btrfs_root *root, | |
3633 | struct btrfs_path *path, | |
3634 | struct btrfs_dir_item *di); | |
5103e947 | 3635 | int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, |
f34f57a3 YZ |
3636 | struct btrfs_root *root, |
3637 | struct btrfs_path *path, u64 objectid, | |
3638 | const char *name, u16 name_len, | |
3639 | const void *data, u16 data_len); | |
5103e947 JB |
3640 | struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, |
3641 | struct btrfs_root *root, | |
3642 | struct btrfs_path *path, u64 dir, | |
3643 | const char *name, u16 name_len, | |
3644 | int mod); | |
22a94d44 JB |
3645 | int verify_dir_item(struct btrfs_root *root, |
3646 | struct extent_buffer *leaf, | |
3647 | struct btrfs_dir_item *dir_item); | |
7b128766 JB |
3648 | |
3649 | /* orphan.c */ | |
3650 | int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, | |
3651 | struct btrfs_root *root, u64 offset); | |
3652 | int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, | |
3653 | struct btrfs_root *root, u64 offset); | |
4df27c4d | 3654 | int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset); |
7b128766 | 3655 | |
dee26a9f | 3656 | /* inode-item.c */ |
3954401f CM |
3657 | int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, |
3658 | struct btrfs_root *root, | |
3659 | const char *name, int name_len, | |
aec7477b | 3660 | u64 inode_objectid, u64 ref_objectid, u64 index); |
3954401f CM |
3661 | int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, |
3662 | struct btrfs_root *root, | |
3663 | const char *name, int name_len, | |
aec7477b | 3664 | u64 inode_objectid, u64 ref_objectid, u64 *index); |
5f39d397 CM |
3665 | int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, |
3666 | struct btrfs_root *root, | |
3667 | struct btrfs_path *path, u64 objectid); | |
293ffd5f | 3668 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
3669 | *root, struct btrfs_path *path, |
3670 | struct btrfs_key *location, int mod); | |
dee26a9f | 3671 | |
f186373f MF |
3672 | struct btrfs_inode_extref * |
3673 | btrfs_lookup_inode_extref(struct btrfs_trans_handle *trans, | |
3674 | struct btrfs_root *root, | |
3675 | struct btrfs_path *path, | |
3676 | const char *name, int name_len, | |
3677 | u64 inode_objectid, u64 ref_objectid, int ins_len, | |
3678 | int cow); | |
3679 | ||
3680 | int btrfs_find_name_in_ext_backref(struct btrfs_path *path, | |
3681 | u64 ref_objectid, const char *name, | |
3682 | int name_len, | |
3683 | struct btrfs_inode_extref **extref_ret); | |
3684 | ||
dee26a9f | 3685 | /* file-item.c */ |
facc8a22 | 3686 | struct btrfs_dio_private; |
459931ec CM |
3687 | int btrfs_del_csums(struct btrfs_trans_handle *trans, |
3688 | struct btrfs_root *root, u64 bytenr, u64 len); | |
61b49440 | 3689 | int btrfs_lookup_bio_sums(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3690 | struct bio *bio, u32 *dst); |
4b46fce2 | 3691 | int btrfs_lookup_bio_sums_dio(struct btrfs_root *root, struct inode *inode, |
facc8a22 MX |
3692 | struct btrfs_dio_private *dip, struct bio *bio, |
3693 | u64 logical_offset); | |
b18c6685 | 3694 | int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, |
c8b97818 CM |
3695 | struct btrfs_root *root, |
3696 | u64 objectid, u64 pos, | |
3697 | u64 disk_offset, u64 disk_num_bytes, | |
3698 | u64 num_bytes, u64 offset, u64 ram_bytes, | |
3699 | u8 compression, u8 encryption, u16 other_encoding); | |
dee26a9f CM |
3700 | int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, |
3701 | struct btrfs_root *root, | |
3702 | struct btrfs_path *path, u64 objectid, | |
db94535d | 3703 | u64 bytenr, int mod); |
065631f6 | 3704 | int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, |
d20f7043 | 3705 | struct btrfs_root *root, |
e6dcd2dc | 3706 | struct btrfs_ordered_sum *sums); |
3edf7d33 | 3707 | int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, |
d20f7043 | 3708 | struct bio *bio, u64 file_start, int contig); |
a2de733c AJ |
3709 | int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end, |
3710 | struct list_head *list, int search_commit); | |
39279cc3 | 3711 | /* inode.c */ |
8ccf6f19 MX |
3712 | struct btrfs_delalloc_work { |
3713 | struct inode *inode; | |
3714 | int wait; | |
3715 | int delay_iput; | |
3716 | struct completion completion; | |
3717 | struct list_head list; | |
3718 | struct btrfs_work work; | |
3719 | }; | |
3720 | ||
3721 | struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, | |
3722 | int wait, int delay_iput); | |
3723 | void btrfs_wait_and_free_delalloc_work(struct btrfs_delalloc_work *work); | |
3724 | ||
b2675157 JB |
3725 | struct extent_map *btrfs_get_extent_fiemap(struct inode *inode, struct page *page, |
3726 | size_t pg_offset, u64 start, u64 len, | |
3727 | int create); | |
00361589 | 3728 | noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, |
7ee9e440 JB |
3729 | u64 *orig_start, u64 *orig_block_len, |
3730 | u64 *ram_bytes); | |
4881ee5a CM |
3731 | |
3732 | /* RHEL and EL kernels have a patch that renames PG_checked to FsMisc */ | |
5036f538 | 3733 | #if defined(ClearPageFsMisc) && !defined(ClearPageChecked) |
4881ee5a CM |
3734 | #define ClearPageChecked ClearPageFsMisc |
3735 | #define SetPageChecked SetPageFsMisc | |
3736 | #define PageChecked PageFsMisc | |
3737 | #endif | |
3738 | ||
b6973aa6 LZ |
3739 | /* This forces readahead on a given range of bytes in an inode */ |
3740 | static inline void btrfs_force_ra(struct address_space *mapping, | |
3741 | struct file_ra_state *ra, struct file *file, | |
3742 | pgoff_t offset, unsigned long req_size) | |
3743 | { | |
3744 | page_cache_sync_readahead(mapping, ra, file, offset, req_size); | |
3745 | } | |
3746 | ||
3de4586c CM |
3747 | struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); |
3748 | int btrfs_set_inode_index(struct inode *dir, u64 *index); | |
e02119d5 CM |
3749 | int btrfs_unlink_inode(struct btrfs_trans_handle *trans, |
3750 | struct btrfs_root *root, | |
3751 | struct inode *dir, struct inode *inode, | |
3752 | const char *name, int name_len); | |
3753 | int btrfs_add_link(struct btrfs_trans_handle *trans, | |
3754 | struct inode *parent_inode, struct inode *inode, | |
3755 | const char *name, int name_len, int add_backref, u64 index); | |
4df27c4d YZ |
3756 | int btrfs_unlink_subvol(struct btrfs_trans_handle *trans, |
3757 | struct btrfs_root *root, | |
3758 | struct inode *dir, u64 objectid, | |
3759 | const char *name, int name_len); | |
2aaa6655 JB |
3760 | int btrfs_truncate_page(struct inode *inode, loff_t from, loff_t len, |
3761 | int front); | |
e02119d5 CM |
3762 | int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans, |
3763 | struct btrfs_root *root, | |
3764 | struct inode *inode, u64 new_size, | |
3765 | u32 min_type); | |
3766 | ||
24bbcf04 | 3767 | int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput); |
6c255e67 MX |
3768 | int btrfs_start_delalloc_roots(struct btrfs_fs_info *fs_info, int delay_iput, |
3769 | int nr); | |
2ac55d41 JB |
3770 | int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end, |
3771 | struct extent_state **cached_state); | |
d2fb3437 | 3772 | int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, |
63541927 FDBM |
3773 | struct btrfs_root *new_root, |
3774 | struct btrfs_root *parent_root, | |
3775 | u64 new_dirid); | |
64a16701 DW |
3776 | int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset, |
3777 | size_t size, struct bio *bio, | |
3778 | unsigned long bio_flags); | |
c2ec175c | 3779 | int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); |
9ebefb18 | 3780 | int btrfs_readpage(struct file *file, struct page *page); |
bd555975 | 3781 | void btrfs_evict_inode(struct inode *inode); |
a9185b41 | 3782 | int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc); |
39279cc3 CM |
3783 | struct inode *btrfs_alloc_inode(struct super_block *sb); |
3784 | void btrfs_destroy_inode(struct inode *inode); | |
45321ac5 | 3785 | int btrfs_drop_inode(struct inode *inode); |
39279cc3 CM |
3786 | int btrfs_init_cachep(void); |
3787 | void btrfs_destroy_cachep(void); | |
6bf13c0c | 3788 | long btrfs_ioctl_trans_end(struct file *file); |
1a54ef8c | 3789 | struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location, |
73f73415 | 3790 | struct btrfs_root *root, int *was_new); |
a52d9a80 | 3791 | struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page, |
306e16ce | 3792 | size_t pg_offset, u64 start, u64 end, |
a52d9a80 CM |
3793 | int create); |
3794 | int btrfs_update_inode(struct btrfs_trans_handle *trans, | |
3795 | struct btrfs_root *root, | |
3796 | struct inode *inode); | |
be6aef60 JB |
3797 | int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans, |
3798 | struct btrfs_root *root, struct inode *inode); | |
5b21f2ed | 3799 | int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode); |
66b4ffd1 | 3800 | int btrfs_orphan_cleanup(struct btrfs_root *root); |
d68fc57b YZ |
3801 | void btrfs_orphan_commit_root(struct btrfs_trans_handle *trans, |
3802 | struct btrfs_root *root); | |
a41ad394 | 3803 | int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size); |
143bede5 | 3804 | void btrfs_invalidate_inodes(struct btrfs_root *root); |
24bbcf04 YZ |
3805 | void btrfs_add_delayed_iput(struct inode *inode); |
3806 | void btrfs_run_delayed_iputs(struct btrfs_root *root); | |
efa56464 YZ |
3807 | int btrfs_prealloc_file_range(struct inode *inode, int mode, |
3808 | u64 start, u64 num_bytes, u64 min_size, | |
3809 | loff_t actual_len, u64 *alloc_hint); | |
0af3d00b JB |
3810 | int btrfs_prealloc_file_range_trans(struct inode *inode, |
3811 | struct btrfs_trans_handle *trans, int mode, | |
3812 | u64 start, u64 num_bytes, u64 min_size, | |
3813 | loff_t actual_len, u64 *alloc_hint); | |
82d339d9 | 3814 | extern const struct dentry_operations btrfs_dentry_operations; |
f46b5a66 CH |
3815 | |
3816 | /* ioctl.c */ | |
3817 | long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg); | |
6cbff00f CH |
3818 | void btrfs_update_iflags(struct inode *inode); |
3819 | void btrfs_inherit_iflags(struct inode *inode, struct inode *dir); | |
dd5f9615 | 3820 | int btrfs_is_empty_uuid(u8 *uuid); |
4cb5300b CM |
3821 | int btrfs_defrag_file(struct inode *inode, struct file *file, |
3822 | struct btrfs_ioctl_defrag_range_args *range, | |
3823 | u64 newer_than, unsigned long max_pages); | |
5af3e8cc SB |
3824 | void btrfs_get_block_group_info(struct list_head *groups_list, |
3825 | struct btrfs_ioctl_space_info *space); | |
35a3621b SB |
3826 | void update_ioctl_balance_args(struct btrfs_fs_info *fs_info, int lock, |
3827 | struct btrfs_ioctl_balance_args *bargs); | |
3828 | ||
5af3e8cc | 3829 | |
39279cc3 | 3830 | /* file.c */ |
9247f317 MX |
3831 | int btrfs_auto_defrag_init(void); |
3832 | void btrfs_auto_defrag_exit(void); | |
4cb5300b CM |
3833 | int btrfs_add_inode_defrag(struct btrfs_trans_handle *trans, |
3834 | struct inode *inode); | |
3835 | int btrfs_run_defrag_inodes(struct btrfs_fs_info *fs_info); | |
26176e7c | 3836 | void btrfs_cleanup_defrag_inodes(struct btrfs_fs_info *fs_info); |
02c24a82 | 3837 | int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync); |
7014cdb4 JB |
3838 | void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, |
3839 | int skip_pinned); | |
828c0950 | 3840 | extern const struct file_operations btrfs_file_operations; |
5dc562c5 JB |
3841 | int __btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3842 | struct btrfs_root *root, struct inode *inode, | |
3843 | struct btrfs_path *path, u64 start, u64 end, | |
1acae57b FDBM |
3844 | u64 *drop_end, int drop_cache, |
3845 | int replace_extent, | |
3846 | u32 extent_item_size, | |
3847 | int *key_inserted); | |
5dc562c5 JB |
3848 | int btrfs_drop_extents(struct btrfs_trans_handle *trans, |
3849 | struct btrfs_root *root, struct inode *inode, u64 start, | |
2671485d | 3850 | u64 end, int drop_cache); |
d899e052 | 3851 | int btrfs_mark_extent_written(struct btrfs_trans_handle *trans, |
d899e052 | 3852 | struct inode *inode, u64 start, u64 end); |
6bf13c0c | 3853 | int btrfs_release_file(struct inode *inode, struct file *file); |
be1a12a0 JB |
3854 | int btrfs_dirty_pages(struct btrfs_root *root, struct inode *inode, |
3855 | struct page **pages, size_t num_pages, | |
3856 | loff_t pos, size_t write_bytes, | |
3857 | struct extent_state **cached); | |
6bf13c0c | 3858 | |
6702ed49 CM |
3859 | /* tree-defrag.c */ |
3860 | int btrfs_defrag_leaves(struct btrfs_trans_handle *trans, | |
de78b51a | 3861 | struct btrfs_root *root); |
58176a96 JB |
3862 | |
3863 | /* sysfs.c */ | |
3864 | int btrfs_init_sysfs(void); | |
3865 | void btrfs_exit_sysfs(void); | |
5ac1d209 JM |
3866 | int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info); |
3867 | void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info); | |
58176a96 | 3868 | |
5103e947 JB |
3869 | /* xattr.c */ |
3870 | ssize_t btrfs_listxattr(struct dentry *dentry, char *buffer, size_t size); | |
6099afe8 | 3871 | |
edbd8d4e | 3872 | /* super.c */ |
edf24abe | 3873 | int btrfs_parse_options(struct btrfs_root *root, char *options); |
6bf13c0c | 3874 | int btrfs_sync_fs(struct super_block *sb, int wait); |
533574c6 JP |
3875 | |
3876 | #ifdef CONFIG_PRINTK | |
3877 | __printf(2, 3) | |
c2cf52eb | 3878 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...); |
533574c6 JP |
3879 | #else |
3880 | static inline __printf(2, 3) | |
c2cf52eb | 3881 | void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...) |
533574c6 JP |
3882 | { |
3883 | } | |
3884 | #endif | |
3885 | ||
c2cf52eb SK |
3886 | #define btrfs_emerg(fs_info, fmt, args...) \ |
3887 | btrfs_printk(fs_info, KERN_EMERG fmt, ##args) | |
3888 | #define btrfs_alert(fs_info, fmt, args...) \ | |
3889 | btrfs_printk(fs_info, KERN_ALERT fmt, ##args) | |
3890 | #define btrfs_crit(fs_info, fmt, args...) \ | |
3891 | btrfs_printk(fs_info, KERN_CRIT fmt, ##args) | |
3892 | #define btrfs_err(fs_info, fmt, args...) \ | |
3893 | btrfs_printk(fs_info, KERN_ERR fmt, ##args) | |
3894 | #define btrfs_warn(fs_info, fmt, args...) \ | |
3895 | btrfs_printk(fs_info, KERN_WARNING fmt, ##args) | |
3896 | #define btrfs_notice(fs_info, fmt, args...) \ | |
3897 | btrfs_printk(fs_info, KERN_NOTICE fmt, ##args) | |
3898 | #define btrfs_info(fs_info, fmt, args...) \ | |
3899 | btrfs_printk(fs_info, KERN_INFO fmt, ##args) | |
27a0dd61 FH |
3900 | |
3901 | #ifdef DEBUG | |
c2cf52eb SK |
3902 | #define btrfs_debug(fs_info, fmt, args...) \ |
3903 | btrfs_printk(fs_info, KERN_DEBUG fmt, ##args) | |
27a0dd61 FH |
3904 | #else |
3905 | #define btrfs_debug(fs_info, fmt, args...) \ | |
3906 | no_printk(KERN_DEBUG fmt, ##args) | |
3907 | #endif | |
c2cf52eb | 3908 | |
2e17c7c6 JB |
3909 | #ifdef CONFIG_BTRFS_ASSERT |
3910 | ||
3911 | static inline void assfail(char *expr, char *file, int line) | |
3912 | { | |
efe120a0 | 3913 | pr_err("BTRFS: assertion failed: %s, file: %s, line: %d", |
2e17c7c6 JB |
3914 | expr, file, line); |
3915 | BUG(); | |
3916 | } | |
3917 | ||
3918 | #define ASSERT(expr) \ | |
3919 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) | |
3920 | #else | |
3921 | #define ASSERT(expr) ((void)0) | |
3922 | #endif | |
3923 | ||
3924 | #define btrfs_assert() | |
533574c6 | 3925 | __printf(5, 6) |
acce952b | 3926 | void __btrfs_std_error(struct btrfs_fs_info *fs_info, const char *function, |
4da35113 | 3927 | unsigned int line, int errno, const char *fmt, ...); |
acce952b | 3928 | |
533574c6 | 3929 | |
49b25e05 JM |
3930 | void __btrfs_abort_transaction(struct btrfs_trans_handle *trans, |
3931 | struct btrfs_root *root, const char *function, | |
3932 | unsigned int line, int errno); | |
3933 | ||
2b0ce2c2 MH |
3934 | #define btrfs_set_fs_incompat(__fs_info, opt) \ |
3935 | __btrfs_set_fs_incompat((__fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3936 | ||
3937 | static inline void __btrfs_set_fs_incompat(struct btrfs_fs_info *fs_info, | |
3938 | u64 flag) | |
3939 | { | |
3940 | struct btrfs_super_block *disk_super; | |
3941 | u64 features; | |
3942 | ||
3943 | disk_super = fs_info->super_copy; | |
3944 | features = btrfs_super_incompat_flags(disk_super); | |
3945 | if (!(features & flag)) { | |
ceda0864 MX |
3946 | spin_lock(&fs_info->super_lock); |
3947 | features = btrfs_super_incompat_flags(disk_super); | |
3948 | if (!(features & flag)) { | |
3949 | features |= flag; | |
3950 | btrfs_set_super_incompat_flags(disk_super, features); | |
efe120a0 | 3951 | btrfs_info(fs_info, "setting %llu feature flag", |
ceda0864 MX |
3952 | flag); |
3953 | } | |
3954 | spin_unlock(&fs_info->super_lock); | |
2b0ce2c2 MH |
3955 | } |
3956 | } | |
3957 | ||
3173a18f JB |
3958 | #define btrfs_fs_incompat(fs_info, opt) \ |
3959 | __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) | |
3960 | ||
3961 | static inline int __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag) | |
3962 | { | |
3963 | struct btrfs_super_block *disk_super; | |
3964 | disk_super = fs_info->super_copy; | |
3965 | return !!(btrfs_super_incompat_flags(disk_super) & flag); | |
3966 | } | |
3967 | ||
005d6427 DS |
3968 | /* |
3969 | * Call btrfs_abort_transaction as early as possible when an error condition is | |
3970 | * detected, that way the exact line number is reported. | |
3971 | */ | |
3972 | ||
49b25e05 JM |
3973 | #define btrfs_abort_transaction(trans, root, errno) \ |
3974 | do { \ | |
3975 | __btrfs_abort_transaction(trans, root, __func__, \ | |
3976 | __LINE__, errno); \ | |
3977 | } while (0) | |
acce952b | 3978 | |
3979 | #define btrfs_std_error(fs_info, errno) \ | |
3980 | do { \ | |
3981 | if ((errno)) \ | |
4da35113 JM |
3982 | __btrfs_std_error((fs_info), __func__, \ |
3983 | __LINE__, (errno), NULL); \ | |
3984 | } while (0) | |
3985 | ||
3986 | #define btrfs_error(fs_info, errno, fmt, args...) \ | |
3987 | do { \ | |
3988 | __btrfs_std_error((fs_info), __func__, __LINE__, \ | |
3989 | (errno), fmt, ##args); \ | |
acce952b | 3990 | } while (0) |
33268eaf | 3991 | |
533574c6 | 3992 | __printf(5, 6) |
8c342930 JM |
3993 | void __btrfs_panic(struct btrfs_fs_info *fs_info, const char *function, |
3994 | unsigned int line, int errno, const char *fmt, ...); | |
3995 | ||
aa43a17c ES |
3996 | /* |
3997 | * If BTRFS_MOUNT_PANIC_ON_FATAL_ERROR is in mount_opt, __btrfs_panic | |
3998 | * will panic(). Otherwise we BUG() here. | |
3999 | */ | |
8c342930 JM |
4000 | #define btrfs_panic(fs_info, errno, fmt, args...) \ |
4001 | do { \ | |
aa43a17c ES |
4002 | __btrfs_panic(fs_info, __func__, __LINE__, errno, fmt, ##args); \ |
4003 | BUG(); \ | |
acce952b | 4004 | } while (0) |
33268eaf JB |
4005 | |
4006 | /* acl.c */ | |
0eda294d | 4007 | #ifdef CONFIG_BTRFS_FS_POSIX_ACL |
4e34e719 | 4008 | struct posix_acl *btrfs_get_acl(struct inode *inode, int type); |
996a710d | 4009 | int btrfs_set_acl(struct inode *inode, struct posix_acl *acl, int type); |
f34f57a3 YZ |
4010 | int btrfs_init_acl(struct btrfs_trans_handle *trans, |
4011 | struct inode *inode, struct inode *dir); | |
9b89d95a | 4012 | #else |
ed8f3737 | 4013 | #define btrfs_get_acl NULL |
996a710d | 4014 | #define btrfs_set_acl NULL |
9b89d95a LZ |
4015 | static inline int btrfs_init_acl(struct btrfs_trans_handle *trans, |
4016 | struct inode *inode, struct inode *dir) | |
4017 | { | |
4018 | return 0; | |
4019 | } | |
9b89d95a | 4020 | #endif |
0f9dd46c | 4021 | |
5d4f98a2 YZ |
4022 | /* relocation.c */ |
4023 | int btrfs_relocate_block_group(struct btrfs_root *root, u64 group_start); | |
4024 | int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, | |
4025 | struct btrfs_root *root); | |
4026 | int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, | |
4027 | struct btrfs_root *root); | |
4028 | int btrfs_recover_relocation(struct btrfs_root *root); | |
4029 | int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len); | |
83d4cfd4 JB |
4030 | int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, |
4031 | struct btrfs_root *root, struct extent_buffer *buf, | |
4032 | struct extent_buffer *cow); | |
3fd0a558 YZ |
4033 | void btrfs_reloc_pre_snapshot(struct btrfs_trans_handle *trans, |
4034 | struct btrfs_pending_snapshot *pending, | |
4035 | u64 *bytes_to_reserve); | |
49b25e05 | 4036 | int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, |
3fd0a558 | 4037 | struct btrfs_pending_snapshot *pending); |
a2de733c AJ |
4038 | |
4039 | /* scrub.c */ | |
aa1b8cd4 SB |
4040 | int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, |
4041 | u64 end, struct btrfs_scrub_progress *progress, | |
63a212ab | 4042 | int readonly, int is_dev_replace); |
143bede5 | 4043 | void btrfs_scrub_pause(struct btrfs_root *root); |
143bede5 | 4044 | void btrfs_scrub_continue(struct btrfs_root *root); |
aa1b8cd4 SB |
4045 | int btrfs_scrub_cancel(struct btrfs_fs_info *info); |
4046 | int btrfs_scrub_cancel_dev(struct btrfs_fs_info *info, | |
4047 | struct btrfs_device *dev); | |
a2de733c AJ |
4048 | int btrfs_scrub_progress(struct btrfs_root *root, u64 devid, |
4049 | struct btrfs_scrub_progress *progress); | |
c404e0dc MX |
4050 | |
4051 | /* dev-replace.c */ | |
4052 | void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info); | |
4053 | void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info); | |
4054 | void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info); | |
a2de733c | 4055 | |
7414a03f AJ |
4056 | /* reada.c */ |
4057 | struct reada_control { | |
4058 | struct btrfs_root *root; /* tree to prefetch */ | |
4059 | struct btrfs_key key_start; | |
4060 | struct btrfs_key key_end; /* exclusive */ | |
4061 | atomic_t elems; | |
4062 | struct kref refcnt; | |
4063 | wait_queue_head_t wait; | |
4064 | }; | |
4065 | struct reada_control *btrfs_reada_add(struct btrfs_root *root, | |
4066 | struct btrfs_key *start, struct btrfs_key *end); | |
4067 | int btrfs_reada_wait(void *handle); | |
4068 | void btrfs_reada_detach(void *handle); | |
4069 | int btree_readahead_hook(struct btrfs_root *root, struct extent_buffer *eb, | |
4070 | u64 start, int err); | |
4071 | ||
bed92eae AJ |
4072 | /* qgroup.c */ |
4073 | struct qgroup_update { | |
64947ec0 | 4074 | struct list_head list; |
bed92eae AJ |
4075 | struct btrfs_delayed_ref_node *node; |
4076 | struct btrfs_delayed_extent_op *extent_op; | |
64947ec0 JS |
4077 | }; |
4078 | ||
bed92eae AJ |
4079 | int btrfs_quota_enable(struct btrfs_trans_handle *trans, |
4080 | struct btrfs_fs_info *fs_info); | |
4081 | int btrfs_quota_disable(struct btrfs_trans_handle *trans, | |
4082 | struct btrfs_fs_info *fs_info); | |
2f232036 | 4083 | int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info); |
b382a324 | 4084 | void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info); |
57254b6e | 4085 | int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info); |
bed92eae AJ |
4086 | int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, |
4087 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); | |
4088 | int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, | |
4089 | struct btrfs_fs_info *fs_info, u64 src, u64 dst); | |
4090 | int btrfs_create_qgroup(struct btrfs_trans_handle *trans, | |
4091 | struct btrfs_fs_info *fs_info, u64 qgroupid, | |
4092 | char *name); | |
4093 | int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, | |
4094 | struct btrfs_fs_info *fs_info, u64 qgroupid); | |
4095 | int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, | |
4096 | struct btrfs_fs_info *fs_info, u64 qgroupid, | |
4097 | struct btrfs_qgroup_limit *limit); | |
4098 | int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info); | |
4099 | void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info); | |
4100 | struct btrfs_delayed_extent_op; | |
4101 | int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans, | |
4102 | struct btrfs_delayed_ref_node *node, | |
4103 | struct btrfs_delayed_extent_op *extent_op); | |
4104 | int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, | |
4105 | struct btrfs_fs_info *fs_info, | |
4106 | struct btrfs_delayed_ref_node *node, | |
4107 | struct btrfs_delayed_extent_op *extent_op); | |
4108 | int btrfs_run_qgroups(struct btrfs_trans_handle *trans, | |
4109 | struct btrfs_fs_info *fs_info); | |
4110 | int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, | |
4111 | struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid, | |
4112 | struct btrfs_qgroup_inherit *inherit); | |
4113 | int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes); | |
4114 | void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes); | |
4115 | ||
4116 | void assert_qgroups_uptodate(struct btrfs_trans_handle *trans); | |
bd989ba3 | 4117 | |
95a06077 JS |
4118 | static inline int is_fstree(u64 rootid) |
4119 | { | |
4120 | if (rootid == BTRFS_FS_TREE_OBJECTID || | |
4121 | (s64)rootid >= (s64)BTRFS_FIRST_FREE_OBJECTID) | |
4122 | return 1; | |
4123 | return 0; | |
4124 | } | |
210549eb DS |
4125 | |
4126 | static inline int btrfs_defrag_cancelled(struct btrfs_fs_info *fs_info) | |
4127 | { | |
4128 | return signal_pending(current); | |
4129 | } | |
4130 | ||
aaedb55b JB |
4131 | /* Sanity test specific functions */ |
4132 | #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS | |
4133 | void btrfs_test_destroy_inode(struct inode *inode); | |
4134 | #endif | |
210549eb | 4135 | |
eb60ceac | 4136 | #endif |